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: Here is the snowball which I chased the boy who threw at our teacher.

SOLUTION: 0

PROBLEM: John put his gold safe.

SOLUTION: 0

PROBLEM: Ellen warned against skating on thin ice.

SOLUTION:
1