[Q]: The bird couldn't fly.

cause:

OPTIONS:
- It migrated for the winter.
- It injured its wing.
[A]: It injured its wing.
[Q]: The man's clothes fit loosely.

cause:

OPTIONS:
- He bought them on sale.
- He lost weight.
[A]: He lost weight.
[Q]: The team lost the game.

cause:

OPTIONS:
- Their best player was injured.
- Their coach pumped them up.
[A]: Their best player was injured.
[Q]: The woman hummed to herself.

cause:

OPTIONS:
- She was nervous.
- She was in a good mood.
[A]:
She was in a good mood.