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: Joan knew the answer.

SOLUTION: 1

PROBLEM: To him presented itself a wonderful opportunity.

SOLUTION: 0

PROBLEM: The sooner you call, the more carefully I know a man that will word the letter.

SOLUTION:
0