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'.

Example Input: They said nobody would pay up, but I know a boy who did pay up.
Example Output: 1

Example Input: No candidate can predict how many people will vote for him.
Example Output: 1

Example Input: Tom denied which book he had been reading.
Example Output:
0