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'.

Q: Wanda taught the students that the earth was round.

A: 1
****
Q: We would prefer John to be the candidate.

A: 1
****
Q: The umpire fell the deck off.

A:
0
****