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 Input:
John received a book.

Ex Output:
1


Ex Input:
Brenda and Molly haggled about the party.

Ex Output:
1


Ex Input:
We are discussing their claim that flying saucers are real.

Ex Output:

1