Context: In 2011, the foundation launched a program called "Reinvent the Toilet Challenge" with the aim to promote the development of innovations in toilet design to benefit the 2.5 billion people that do not have access to safe and effective sanitation. This program has generated significant interest of the mainstream media. It was complemented by a program called "Grand Challenges Explorations" (2011 to 2013 with some follow-up grants reaching until 2015) which involved grants of US$100,000 each in the first round. Both funding schemes explicitly excluded project ideas that relied on centralized sewerage systems or are not compatible with development country contexts.

Question: When was reinvent the toilet launched 
Answer: In 2011, the foundation launched a program called "Reinvent the Toilet Challenge

Question: What is the aim of reinvent the toilet 
Answer: to promote the development of innovations in toilet design to benefit the 2.5 billion people that do not have access to safe and effective sanitation

Question: WHat program compliment reinvent the toilet 
Answer: It was complemented by a program called "Grand Challenges Explorations" (2011 to 2013 with some follow-up grants reaching until 2015)

Question: What was excluded by the funding schemes 
Answer: Both funding schemes explicitly excluded project ideas that relied on centralized sewerage systems or are not compatible with development country contexts

Question: In 2011 what program was launched by Grand Challenges Exploration?
Answer: Unanswerable

Question: What program generated interest by Grand Challenges Explorations?
Answer: Unanswerable

Question: What did both innovations exclude?
Answer: Unanswerable

Question: What program complimented innovations in toilet design?
Answer: Unanswerable

Question: What was the aim of Grand Challenges Explorations?
Answer: Unanswerable