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'.

[EX Q]: Mary gets depressed when she listens to the Grateful Dead.
[EX A]: 1

[EX Q]: John must not do have eaten.
[EX A]: 0

[EX Q]: John leftn't the party early.
[EX A]:
0