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.

[Q]: Context : Decameron Nights is a 1953 anthology Technicolor film based on three tales from The Decameron by Giovanni Boccaccio, specifically the ninth and tenth tales of the second day and the ninth tale of the third.
Subject : Decameron Nights
Relation : based on
[A]: Which is the basis of Decameron Nights?

[Q]: Context : 5 Tauri (5 Tau) is a star in the constellation Taurus.
Subject : 5 Tauri
Relation : constellation
[A]: Which constellation is 5 Tauri a part of?

[Q]: Context : Broadcast Markup Language, or BML, is an XML-based standard developed by Japan's Association of Radio Industries and Businesses as a data broadcasting specification for digital television broadcasting.
Subject : Broadcast Markup Language
Relation : based on
[A]:
Which is the basis of Broadcast Markup Language?