A processor identifies a component included in an assembly. The processor retrieves historical records that indicate which substances are included in the component. The processor determines a probability that the component includes the substances based on at least one historical record. The processor generates a list of substances included in the assembly based on the substances being statistically likely to be present in the component of the assembly.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method for determining substances within an assembly, the method comprising: identifying, by a processor, a component included in an assembly; retrieving, by the processor, a list of one or more historical records that indicate a substance is included in the component; determining, by the processor, a probability that the component includes the substance based, at least in part, on at least one historical record included in the list of historical records; and generating, by the processor, a first list of substances for the assembly that are statistically likely to be present in the assembly based on, at least in part, a probability that indicates the component does include the substance. 2. The method of claim 1, the method further comprising: comparing, by the processor, the first list of substances for the assembly with a second list of substances for the assembly that are included in a environmental product declaration; identifying, by the processor, a difference in a quantity of a substance that is included in the first list of substances and the second list of substances; and identifying, by the processor, a test to be performed to determine an actual quantity of the substance present in the assembly. 3. The method of claim 1, the method further comprising: comparing, by the processor, the first list of substances for the assembly with a second list of substances for the assembly that are included in a environmental product declaration; identifying, by the processor, a substance that is included in only one of the first list of substances or the second list of substances; and identifying, by the processor, a test to be performed to verify whether the substance is present in the assembly. 4. The method of claim 1, the method further comprising: removing, by the processor, a historical record from the list of one or more historical records based, at least in part, on a statistically probably that the historical record includes a composition of substances for the component that do not represent the actual composition of substances for the component included in the assembly. 5. The method of claim 1, the method further comprising: determining, by the processor, whether there exists a number of historical records from which to determine a statistically probably composition of substances for the component included in the assembly. 6. The method of claim 5, the method further comprising: responsive to a determination that there does not exist the number of historical records, identifying, by the processor, a test to be performed to identify one or more substances present in the component. 7. The method of claim 1, the method further comprising: determining, by the processor, a probability that the first list of substances for the assembly represent the actual substances present in the assembly. 8. A computer program product for determining substances within an assembly, the computer program product comprising: a computer-readable storage media and program instructions stored on the computer-readable storage media, the program instructions comprising: program instructions to identify a component included in an assembly; program instructions to retrieve a list of one or more historical records that indicate a substance is included in the component; program instructions to determine a probability that the component includes the substance based, at least in part, on at least one historical record included in the list of historical records; and program instructions to generate a first list of substances for the assembly that are statistically likely to be present in the assembly based on, at least in part, a probability that indicates the component does include the substance. 9. The computer program product of claim 8, the program instructions further comprising: program instructions to compare the first list of substances for the assembly with a second list of substances for the assembly that are included in a environmental product declaration; program instructions to identify a difference in a quantity of a substance that is included in the first list of substances and the second list of substances; and program instructions to identify a test to be performed to determine an actual quantity of the substance present in the assembly. 10. The computer program product of claim 8, the program instructions further comprising: program instructions to compare the first list of substances for the assembly with a second list of substances for the assembly that are included in a environmental product declaration; program instructions to identify a substance that is included in only one of the first list of substances or the second list of substances; and program instructions to identify a test to be performed to verify whether the substance is present in the assembly. 11. The computer program product of claim 8, the program instructions further comprising: program instructions to remove a historical record from the list of one or more historical records based, at least in part, on a statistically probably that the historical record includes a composition of substances for the component that do not represent the actual composition of substances for the component included in the assembly. 12. The computer program product of claim 8, the program instructions further comprising: program instructions to determine whether there exists a number of historical records from which to determine a statistically probably composition of substances for the component included in the assembly. 13. The computer program product of claim 12, the program instructions further comprising: program instructions to respond to a determination that there does not exist the number of historical records, by identifying a test to be performed to identify one or more substances present in the component. 14. The computer program product of claim 8, the program instructions further comprising: program instructions to determine a probability that the first list of substances for the assembly represent the actual substances present in the assembly. 15. A computer system for determining substances within an assembly, the computer system comprising: a processor; a computer readable storage medium; program instructions stored on the computer readable storage medium for execution by at least one of the processor, the program instructions comprising: program instructions to identify a component included in an assembly; program instructions to retrieve a list of one or more historical records that indicate a substance is included in the component; program instructions to determine a probability that the component includes the substance based, at least in part, on at least one historical record included in the list of historical records; and program instructions to generate a first list of substances for the assembly that are statistically likely to be present in the assembly based on, at least in part, a probability that indicates the component does include the substance. 16. The computer system of claim 15, the program instructions further comprising: program instructions to compare the first list of substances for the assembly with a second list of substances for the assembly that are included in a environmental product declaration; program instructions to identify a difference in a quantity of a substance that is included in the first list of substances and the second list of substances; and program instructions to identify a test to be performed to determine an actual quantity of the substance present in the assembly. 17. The computer system of claim 15, the program instructions further comprising: program instructions to compare the first list of substances for the assembly with a second list of substances for the assembly that are included in a environmental product declaration; program instructions to identify a substance that is included in only one of the first list of substances or the second list of substances; and program instructions to identify a test to be performed to verify whether the substance is present in the assembly. 18. The computer system of claim 15, the program instructions further comprising: program instructions to remove a historical record from the list of one or more historical records based, at least in part, on a statistically probably that the historical record includes a composition of substances for the component that do not represent the actual composition of substances for the component included in the assembly. 19. The computer system of claim 15, the program instructions further comprising: program instructions to determine whether there exists a number of historical records from which to determine a statistically probably composition of substances for the component included in the assembly. 20. The computer system of claim 15, the program instructions further comprising: program instructions to determine a probability that the first list of substances for the assembly represent the actual substances present in the assembly.