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.

[EX Q]: After throwing a ball upwards, it will keep going up
After throwing a ball upwards, it will come down again
[EX A]: first

[EX Q]: He put some petrol to put out the fire
He put some water to put out the fire
[EX A]: first

[EX Q]: It's unbelievable that ancient people learnt how to make iron
It's unbelievable that ancient people learnt how to drink water
[EX A]:
second