Context: The Reinvent the Toilet Challenge is a long-term research and development effort to develop a hygienic, stand-alone toilet. This challenge is being complemented by another investment program to develop new technologies for improved pit latrine emptying (called by the foundation the "Omni-Ingestor") and fecal sludge processing (called "Omni-Processor"). The aim of the "Omni Processor" is to convert excreta (for example fecal sludge) into beneficial products such as energy and soil nutrients with the potential to develop local business and revenue.

Question: What is reinvent the toilet trying to develop
Answer: The Reinvent the Toilet Challenge is a long-term research and development effort to develop a hygienic, stand-alone toilet

Question: What compliments the challenge 
Answer: This challenge is being complemented by another investment program to develop new technologies for improved pit latrine emptying

Question: What does the Omni processor do
Answer: The aim of the "Omni Processor" is to convert excreta (for example fecal sludge) into beneficial products such as energy and soil nutrients

Question: What does Reinvent the Toilet Challenge convert into beneficial products?
Answer: Unanswerable

Question: What does the stand alone toilet do to develop local business and revenue?
Answer: Unanswerable

Question: What compliments the research and development effort to develop a hygenic toilet?
Answer: Unanswerable

Question: What does another investment program use to convert sludge?
Answer: Unanswerable

Question: What is another investment program trying to develop?
Answer: Unanswerable