instruction:
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'.
question:
What do you believe that iron is to be a fact well known to virtually everybody?
answer:
0


question:
He's a man to whom liberty, we could never grant it.
answer:
0


question:
Many flags fluttered over the fort.
answer:

1