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]: John was unknown to be the murderer.
[A]: 0


[Q]: The hiker will reach the top of the mountain for an hour.
[A]: 0


[Q]: Robin arrived all the way at the station.
[A]:
0