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.

Input: Consider Input: Context : The 1972 Thandwe crash occurred on 16 August 1972 near Thandwe, Burma.
Subject : 1972 Thandwe crash
Relation : point in time

Output: On what date did 1972 Thandwe crash occur?

Input: Consider Input: Context : Carl Gamborg-Andresen was born to Norway and emigrated to the United States.
Subject : Carl Gamborg-Andresen
Relation : military branch

Output: What military organization did Carl Gamborg-Andresen belong to?

Input: Consider Input: Context : An order to enter the BTR-60P into Soviet Army service was issued on 13 December 1959.
Subject : BTR-60
Relation : service entry
Output: What year did BTR-60 come into use?