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: Our friends won't buy this analysis, let alone the next one we propose.
Example output: 1
Example explanation: Since all the entities are in thier correct positions the statement is grammatically correct.Hence, the output is 1.
Q: How do you think that Mary solved the problem?
A:
1