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:
Willy is taller than I know a boy who is.
answer:
0


question:
The sign warned against skating on the pond.
answer:
1


question:
We'll go together, us.
answer:

0