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]: Sarah promised her old car to Catherine, but then gave it to her son instead.
[A]: 1


[Q]: Ellen and Helen talked.
[A]: 1


[Q]: The harder it rains, how much faster do you run?
[A]:
1