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]: How brave they must believe the claim that you are!
[A]: 0


[Q]: Mary laughed at John.
[A]: 1


[Q]: I don't really want to go to the dentist's, but I know I should.
[A]:
1