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: Which packages didn't Sam pick up which are to be mailed tomorrow until it had stopped raining?
Example Output: 0

Example Input: John is leaving but Mary's not.
Example Output: 1

Example Input: I sent the package to the Antarctic.
Example Output:
1