A question that is free of any grammatical or logcal errors, should be labeled 'yes', otherwise it should be indicated as 'no'. A question is grammatically correct if all its entities i.e. nouns, verbs, adjectives, prepositions, pronouns, adverbs are at appropriate position. A question is logically correct if the semantic makes sense.

[EX Q]: Sentence: So from now on, Marsha takes extra special care to make sure Joey is safe and sound at all times. 
Question: How often was Joey safe and sound?
[EX A]: Yes.

[EX Q]: Sentence: A floodplain is an area where a thick layer of rich soil is left behind as the floodwater recedes. 
Question: Can you grow corps in a floodplain?
[EX A]: No.

[EX Q]: Sentence: Every Saturday we would go to the park and play Toodles' favorite game. 
Question: When did it become his favorite game?
[EX A]:
Yes.

