Instructions: In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
Input: Sentence: Viruses biological agents that infect living hosts contain dna, yet lack the other parts shared by all cells, including a plasma membrane, cytoplasm, and ribosomes. Question: What biological agents that infect living hosts contain dna, yet lack the other parts shared by all cells, including a plasma membrane, cytoplasm, and ribosomes?
Output:
viruses