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: John is leaving but Mary's not.

SOLUTION: 1

PROBLEM: Steve tossed the ball into the garden.

SOLUTION: 1

PROBLEM: The room contains few armchairs.

SOLUTION:
1