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: The perception of the problem is quite thorough.

Answer: 1


Question: What do you believe that iron is to be a fact well known to virtually everybody?

Answer: 0


Question: He threw the letter into the wastebasket.

Answer:
1