TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : Betty Fibichová (16 March 1846 -- 20 May 1901) was a Czechoslovak opera singer and the wife of composer Zdeněk Fibich. 
Question : What is Betty Fibichová's spouse's name?

SOLUTION: Zdeněk Fibich

PROBLEM: 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?

SOLUTION: Laura Marx

PROBLEM: Context : À l'ombre des derricks is a Lucky Luke comic written by Goscinny and illustrated by Morris. 
Question : What is the series called that À l'ombre des derricks belongs to?

SOLUTION:
Lucky Luke