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: John tries to meet often Mary.

A: 0
****
Q: The exterminator killed the insects with DDT.

A:
1
****