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 : She made her Covent Garden, London debut as Donna Elvira in Mozart's Don Giovanni in 1913, under the professional name of Elsa Stralia (after Australia, like Florence Austral). 
Subject : Elsa Stralia 
Relation : date of death
What date did Elsa Stralia die on?

Context : Guru Dutt was born on 9 July 1925, in Bangalore to Shivashanker Rao Padukone and Vasanthi Padukone in a Konkani Chitrapur Saraswat Brahmin family. 
Subject : Guru Dutt 
Relation : spouse
What is Guru Dutt's spouse's name?

Context : Song at Midnight (simplified Chinese: 夜半歌声; traditional Chinese: 夜半歌聲; pinyin: Yè bàn gē shēng) (also known as Singing at Midnight or literally Voice of Midnight) is a 1937 film directed by Ma-Xu Weibang. 
Subject : Song at Midnight 
Relation : based on

Which is the basis of Song at Midnight?