TASK DEFINITION: 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'.
PROBLEM: Penny rowed across the lake.

SOLUTION: 1

PROBLEM: How do you wonder whether John said Mary solved the problem?

SOLUTION: 0

PROBLEM: I don't know if to agree with him.

SOLUTION:
0