instruction:
Generate a correct and concise answer for the question based on the words in the context.
question:
Context : The Roviana rail (Gallirallus rovianae) is a species of bird in the family Rallidae. 
Question : Is the taxon rank of Roviana rail species or genus?
answer:
species


question:
Context : He was the father of Emmett Louis Till, whose murder in 1955 at the age of 14 galvanized the African-American civil rights movement. 
Question : Which crime led to the conviction of Louis Till?
answer:
murder


question:
Context : Colton Sceviour (born April 20, 1989) is a Canadian professional ice hockey right winger currently playing for the Dallas Stars of the National Hockey League (NHL). 
Question : What team did Colton Sceviour play for?
answer:

Dallas Stars