You will be given a context, a subject and a relation. Your task is to generate a question based on the subject and relation. The generated question should include the given subject. Try to use a minimum number of words that are not present in either context, subject or relation while generating question.

Context : Rudolf Witzig re-joined the military service in the newly created Bundeswehr of the Federal Republic of Germany on 16 January 1956. 
Subject : Rudolf Witzig 
Relation : conflict
What war did Rudolf Witzig participate in?

Context : Idiotest (a portmanteau of ``idiot'' and ``test'' and stylized as Id!otest) is an American television game show broadcast by Game Show Network (GSN). 
Subject : Idiotest 
Relation : original network
Which channel broadcast Idiotest?

Context : Cabut was a staff cartoonist and shareholder at Charlie Hebdo. 
Subject : Cabu 
Relation : educated at

What college did Cabu go to?