Where Usain Bolt might be competing over a brief period of time (2,3,5,3)
I believe the answer is:
in the short run
'over a brief period of time' is the definition.
(I've seen this before)
'where usain bolt might be competing' is the wordplay.
I cannot quite understand how this works, but
'be' could be 'run' (running is a kind of being) and 'run' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for in the short run that I've seen is " Over a brief period of time".)