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.
--------
Question: Context : Wallis, Duchess of Windsor (previously Wallis Simpson and Wallis Spencer, born Bessie Wallis Warfield; 19 June 1896 -- 24 April 1986) was an American socialite. 
Subject : Wallis Simpson 
Relation : date of death

Answer: What date did Wallis Simpson die on?


Question: Context : Milo Lemert (March 25, 1890--September 29, 1918) was a soldier in the United States Army who received the Medal of Honor for his actions during World War I. 
Subject : Milo Lemert 
Relation : award received

Answer: What was the award received by Milo Lemert?


Question: Context : 3DML files are written in an XML syntax which can be delivered from standard web servers and shown within a browser plugin and independent 3DML browser called Flatland Rover. 
Subject : 3DML 
Relation : based on

Answer:
Which is the basis of 3DML?