In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Example Input: The most heat-treatable alloys are decided but only?, Context: Conversely, most heat-treatable alloys are precipitation hardening alloys, which produce the opposite effects that steel does. When heated to form a solution and then cooled quickly, these alloys become much softer than normal, during the diffusionless transformation, and then harden as they age. The solutes in these alloys will precipitate over time, forming intermetallic phases, which are difficult to discern from the base metal. Unlike steel, in which the solid solution separates to form different crystal phases, precipitation hardening alloys separate to form different phases within the same crystal. These intermetallic alloys appear homogeneous in crystal structure, but tend to behave heterogeneous, becoming hard and somewhat brittle.
Example Output: Conversely

Example Input: What did Darwin think about Wallace's theory, Context: Darwin was hard at work on his "big book" on Natural Selection, when on 18 June 1858 he received a parcel from Wallace, who stayed on the Maluku Islands (Ternate and Gilolo). It enclosed twenty pages describing an evolutionary mechanism, a response to Darwin's recent encouragement, with a request to send it on to Lyell if Darwin thought it worthwhile. The mechanism was similar to Darwin's own theory. Darwin wrote to Lyell that "your words have come true with a vengeance, ... forestalled" and he would "of course, at once write and offer to send [it] to any journal" that Wallace chose, adding that "all my originality, whatever it may amount to, will be smashed". Lyell and Hooker agreed that a joint publication putting together Wallace's pages with extracts from Darwin's 1844 Essay and his 1857 letter to Gray should be presented at the Linnean Society, and on 1 July 1858, the papers entitled On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection, by Wallace and Darwin respectively, were read out but drew little reaction. While Darwin considered Wallace's idea to be identical to his concept of natural selection, historians have pointed out differences. Darwin described natural selection as being analogous to the artificial selection practised by animal breeders, and emphasised competition between individuals; Wallace drew no comparison to selective breeding, and focused on ecological pressures that kept different varieties adapted to local conditions. Some historians have suggested that Wallace was actually discussing group selection rather than selection acting on individual variation.
Example Output: On the Tendency of Species to form Varieties

Example Input: Where did John Lee Hooker live prior to Detroit?, Context: In the 1940s, Detroit blues artist John Lee Hooker became a long-term resident in the city's southwest Delray neighborhood. Hooker, among other important blues musicians migrated from his home in Mississippi bringing the Delta blues to northern cities like Detroit. Hooker recorded for Fortune Records, the biggest pre-Motown blues/soul label. During the 1950s, the city became a center for jazz, with stars performing in the Black Bottom neighborhood. Prominent emerging Jazz musicians of the 1960s included: trumpet player Donald Byrd who attended Cass Tech and performed with Art Blakey and the Jazz Messengers early in his career and Saxophonist Pepper Adams who enjoyed a solo career and accompanied Byrd on several albums. The Graystone International Jazz Museum documents jazz in Detroit.
Example Output:
Mississippi