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 : ITV Digital Channels Ltd now solely under control of ITV plc is today a profitable business which runs all ITV plc's television channels with the exception of ITV, which is part of the ITV Network.
Subject : ITV Digital Channels
Relation : parent company
What is ITV Digital Channels's parent company?

Context : Song at Midnight (simplified Chinese: ; traditional Chinese: ; pinyin: Ye ban ge sheng) (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?

Context : Gao Wei () (557--577), often known in history as Houzhu of Northern Qi (()), courtesy name Rengang (), sometimes referred to by his later Northern Zhou-created title of Duke of Wen (), was an emperor of Northern Qi.
Subject : Gao Wei
Relation : spouse
What is Gao Wei's spouse's name?