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: He can't pay taxes, can he?
Example Output: 1

Example Input: It's probable that in general he understands what's going on.
Example Output: 1

Example Input: The more people you say will buy tickets, the happier I'll be.
Example Output:
1