You will be given a sentence. Check whether the sentence is grammatically correct and is meaningful. If the sentence is grammatically correct, then answer with '1', otherwise answer with '0'.

Q: A solution presented itself yesterday.

A: 1
****
Q: Keep your mouth shut tighter, the more John eats, OK?

A: 1
****
Q: He can't pay taxes, can he?

A:
1
****