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 believed his to have loved her.
[EX A]: 0

[EX Q]: The rope stretched over the pulley.
[EX A]: 1

[EX Q]: How do you think that Mary solved the problem?
[EX A]:
1