In this task, you are given two natural language statements with similar wording. You must choose the statement that makes less sense based on common sense knowledge. A '
' separates the statements. Use "first" or "second" to indicate which sentence makes less sense.

Q: He just bought a new head phone, thus he can't wait to try out the sound quality
He just bought a new bike, thus he can't wait to try out the sound quality

A: second
****
Q: A Fish can fly.
A Bird can fly.

A: first
****
Q: Nail is a small piece of metal which is inserted into a lock and turned to open or close it
Key is a small piece of metal which is inserted into a lock and turned to open or close it

A:
first
****