Input: Article: Essential genes are the set of genes thought to be critical for an organism's survival. This definition assumes the abundant availability of all relevant nutrients and the absence of environmental stress. Only a small portion of an organism's genes are essential. In bacteria, an estimated 250400 genes are essential for Escherichia coli and Bacillus subtilis, which is less than 10% of their genes. Half of these genes are orthologs in both organisms and are largely involved in protein synthesis. In the budding yeast Saccharomyces cerevisiae the number of essential genes is slightly higher, at 1000 genes (~20% of their genes). Although the number is more difficult to measure in higher eukaryotes, mice and humans are estimated to have around 2000 essential genes (~10% of their genes).

Now answer this question: How many essential genes does Saccharomyces cerevisiae have?

Output: 1000 genes

Input: Article: The relieved British began to assess the impact of the Blitz in August 1941, and the RAF Air Staff used the German experience to improve Bomber Command's offensives. They concluded bombers should strike a single target each night and use more incendiaries because they had a greater impact on production than high explosives. They also noted regional production was severely disrupted when city centres were devastated through the loss of administrative offices, utilities and transport. They believed the Luftwaffe had failed in precision attack, and concluded the German example of area attack using incendiaries was the way forward for operations over Germany.

Now answer this question: What caused the most production disruption?

Output: when city centres were devastated through the loss of administrative offices, utilities and transport.

Input: Article: A desire to be closer to the urban scene has also attracted some young professionals to reside in inner ring suburbs such as Grosse Pointe and Royal Oak, Detroit. Detroit's proximity to Windsor, Ontario, provides for views and nightlife, along with Ontario's minimum drinking age of 19. A 2011 study by Walk Score recognized Detroit for its above average walkability among large U.S. cities. About two-thirds of suburban residents occasionally dine and attend cultural events or take in professional games in the city of Detroit.

Now answer this question: Who conducted a study about Detroit's walk-ability?

Output:
Walk Score