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: All native speakers have a grammatical competence which can generate an infinite set of grammatical sentences from a finite set of resources.

A: 1
****
Q: Paula hit at the fence.

A: 1
****
Q: I screamed at some children who were watching me.

A:
1
****