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: Who did Plato listen to DP Demosthenes' oration about?
Example Output: 0

Example Input: Mary laughed at John.
Example Output: 1

Example Input: The witch poisoned Snow White.
Example Output:
1