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]: They pushed through the crowd.
[EX A]: 1

[EX Q]: The tree changed from a maple into an oak.
[EX A]: 1

[EX Q]: The sofa was longer than the desk was.
[EX A]:
1