Problem: 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.
What compliments the challenge
The answer is the following: This challenge is being complemented by another investment program to develop new technologies for improved pit latrine emptying

Problem: Melbourne has an integrated public transport system based around extensive train, tram, bus and taxi systems. Flinders Street Station was the world's busiest passenger station in 1927 and Melbourne's tram network overtook Sydney's to become the world's largest in the 1940s, at which time 25% of travellers used public transport but by 2003 it had declined to just 7.6%. The public transport system was privatised in 1999, symbolising the peak of the decline. Despite privatisation and successive governments persisting with auto-centric urban development into the 21st century, there have since been large increases in public transport patronage, with the mode share for commuters increasing to 14.8% and 8.4% of all trips. A target of 20% public transport mode share for Melbourne by 2020 was set by the state government in 2006. Since 2006 public transport patronage has grown by over 20%.
In what year was the public transport system privatised?
The answer is the following: 1999

Problem: During the years immediately following the novel's publication, Harper Lee enjoyed the attention its popularity garnered her, granting interviews, visiting schools, and attending events honoring the book. In 1961, when To Kill a Mockingbird was in its 41st week on the bestseller list, it was awarded the Pulitzer Prize, stunning Lee. It also won the Brotherhood Award of the National Conference of Christians and Jews in the same year, and the Paperback of the Year award from Bestsellers magazine in 1962. Starting in 1964, Lee began to turn down interviews, complaining that the questions were monotonous, and grew concerned that attention she received bordered on the kind of publicity celebrities sought. Since the, she declined talking with reporters about the book. She also steadfastly refused to provide an introduction, writing in 1995: "Introductions inhibit pleasure, they kill the joy of anticipation, they frustrate curiosity. The only good thing about Introductions is that in some cases they delay the dose to come. Mockingbird still says what it has to say; it has managed to survive the years without preamble."
Which year did To Kill a Mockingbird win the Pulitzer Prize?
The answer is the following: 1961

Problem: A party's floor leader, in conjunction with other party leaders, plays an influential role in the formulation of party policy and programs. He is instrumental in guiding legislation favored by his party through the House, or in resisting those programs of the other party that are considered undesirable by his own party. He is instrumental in devising and implementing his party's strategy on the floor with respect to promoting or opposing legislation. He is kept constantly informed as to the status of legislative business and as to the sentiment of his party respecting particular legislation under consideration. Such information is derived in part from the floor leader's contacts with his party's members serving on House committees, and with the members of the party's whip organization.
How are floor leaders kept informed of legislative status?
The answer is the following:
contacts with his party's members serving on House committees, and with the members of the party's whip organization