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:
Who did Mary see walking toward the railroad station?
answer:
1


question:
Mary wonders for Bill to come.
answer:
0


question:
I think that Mort's a swell guy, and Lenny thinks so too.
answer:

1