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

A: 0
****
Q: They put the book in the box.

A: 1
****
Q: The witch went into the forest and thereby vanished.

A:
1
****