Input: Gene
The relationship between genes can be measured by comparing the sequence alignment of their DNA.:7.6 The degree of sequence similarity between homologous genes is called conserved sequence. Most changes to a gene's sequence do not affect its function and so genes accumulate mutations over time by neutral molecular evolution. Additionally, any selection on a gene will cause its sequence to diverge at a different rate. Genes under stabilizing selection are constrained and so change more slowly whereas genes under directional selection change sequence more rapidly. The sequence differences between genes can be used for phylogenetic analyses to study how those genes have evolved and how the organisms they come from are related.

What is the degree of sequence similarity between homologous genes called?
Output: conserved sequence

Input: New Delhi
In recent Mercer’s 2015 annual quality-of-living survey, New Delhi ranks at number 154 out of 230 cities due to bad air quality and pollution. The World Health Organization ranked New Delhi as the world’s worst polluted city in 2014 among about 1,600 cities the organization tracked around the world.

What is New Delhi's rank in Mercer's 2015 quality of living survey?
Output: 154

Input: Josip Broz Tito
Tito was the chief architect of the second Yugoslavia, a socialist federation that lasted from 1943 to 1991–92. Despite being one of the founders of Cominform, soon he became the first Cominform member to defy Soviet hegemony and the only one to manage to leave Cominform and begin with its own socialist program. Tito was a backer of independent roads to socialism (sometimes referred to as "national communism"). In 1951 he implemented a self-management system that differentiated Yugoslavia from other socialist countries. A turn towards a model of market socialism brought economic expansion in the 1950s and 1960s and a decline during the 1970s. His internal policies included the suppression of nationalist sentiment and the promotion of the "brotherhood and unity" of the six Yugoslav nations. After Tito's death in 1980, tensions between the Yugoslav republics emerged and in 1991 the country disintegrated and went into a series of wars and unrest that lasted the rest of the decade, and which continue to impact most of the former Yugoslav republics. He remains a very controversial figure in the Balkans.

What group did Tito found?
Output: Cominform

Input: War on Terror
On the morning of 11 September 2001, 19 men affiliated with al-Qaeda hijacked four airliners all bound for California. Once the hijackers assumed control of the airliners, they told the passengers that they had the bomb on board and would spare the lives of passengers and crew once their demands were met – no passenger and crew actually suspected that they would use the airliners as suicide weapons since it had never happened before in history. The hijackers – members of al-Qaeda's Hamburg cell – intentionally crashed two airliners into the Twin Towers of the World Trade Center in New York City. Both buildings collapsed within two hours from fire damage related to the crashes, destroying nearby buildings and damaging others. The hijackers crashed a third airliner into the Pentagon in Arlington County, Virginia, just outside Washington D.C. The fourth plane crashed into a field near Shanksville, Pennsylvania, after some of its passengers and flight crew attempted to retake control of the plane, which the hijackers had redirected toward Washington D.C., to target the White House, or the U.S. Capitol. No flights had survivors. A total of 2,977 victims and the 19 hijackers perished in the attacks.

How many al-Qaeda operatives hijacked planes on 9/11?
Output:
19