Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

MPEG-4 Part 14 is an instance of the more general ISO/IEC 14496-12:2004 (MPEG-4 Part 12: ISO base media file format) which is directly based upon the QuickTime File Format.
Which is the basis of MPEG-4 Part 14?

The Jinfeng Gold Mine (Chinese: ) is an combined open pit and underground gold mining operation in the Guizhou province, China.
The product of Jinfeng Gold Mine is what?

Louis Lacombe was born in Bourges, the brother of composer Felicita Casella.

Who is Louis Lacombe's sister?