Generate a correct and concise answer for the question based on the words in the context.

[Q]: Context : Lorenzo wrote after Lafargue's death: ``The double, original and, whatever the rutinarians say, even sympathetic suicide of Paul Lafargue and Laura Marx (in Spain, women keep their maiden surname after marriage), who knew and could live united and lovers until death, has awakened my memories (...) Lafargue was my teacher: his memory is for me almost as important as that of Fanelli. 
Question : What is Paul Lafargue's spouse's name?
[A]: Laura Marx


[Q]: 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?
[A]: murder


[Q]: Context : USS LST-622 was a United States Navy LST-542-class tank landing ship in commission from 1944 to 1946. 
Question : What type of submarine was USS LST-622 classified as?
[A]:
LST-542-class tank landing ship