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'.
One example is below.
Q: Our friends won't buy this analysis, let alone the next one we propose.
A: 1
Rationale: Since all the entities are in thier correct positions the statement is grammatically correct.Hence, the output is 1.
Q: Sarah sang.
A:
1