You will be given a definition of a task first, then some input of the task.
Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Andrey Atanasov (Bulgarian: ; born 9 April 1987) is a Bulgarian footballer who currently plays as a forward for Greek side Acharnaikos.
Output:
What was Andrey Atanasov specialty in their profesisonal sport?