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: I don't know the people present.

SOLUTION: 1

PROBLEM: Heather cabled for Sara to come.

SOLUTION: 1

PROBLEM: Through the hall there echoed a loud cry.

SOLUTION:
1