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]: What do you believe that iron is to be a fact well known to virtually everybody?
[A]: 0


[Q]: The thief chased down the street.
[A]: 0


[Q]: We realised that Dr Jones died because he ate too much rich food, didn't he?
[A]:
0