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: Jennie smiled the sandwich.
Example Output: 0

Example Input: If Ron knows whether to wear a tuxedo, and Caspar knows whether not to, do they know different things?
Example Output: 1

Example Input: Fluffy is sick, which nobody knows.
Example Output:
1