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: Sandy taught the children the alphabet, but only got as far as the letter `` r ''.

A: 1
****
Q: We are knowing this theory.

A: 0
****
Q: We abandoned the area.

A:
1
****