Q: Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
Context : Guo Lei (born 1982-04-26 in Baoding, Hebei) is a male Chinese judoka who competed at the 2008 Summer Olympics in the Half middleweight (73--81 kg) event.
Answer : male
A:
What was Guo Lei's gender?