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 : Summer is the mother of his twin children: a son, Dirk Pitt, Jr., and a daughter, Summer Pitt. 
Subject : Dirk Pitt 
Relation : conflict
In which war did Dirk Pitt fight?

Context : The Exotic Enchanter is an anthology of four fantasy short stories edited by science fiction and fantasy authors L. Sprague de Camp and Christopher Stasheff. 
Subject : The Exotic Enchanter 
Relation : series
Which show does The Exotic Enchanter appear on?

Context : With the American Revolutionary War came ``Brother Jonathan'' as another personification and finally after the War of 1812 Uncle Sam appeared. 
Subject : Uncle Sam 
Relation : based on

Which is the basis of Uncle Sam?