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.

Q: Sentence: In the mean time fate had avenged Law on one of his lesser enemies. 
Question: How often did fate intervene?

A: Yes.
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Q: Sentence: Johnson is a justice on California's Second District Court of Appeal. 
Question: When did Johnson arrive to court?

A: Yes.
****
Q: Sentence: Islam later emerged as the majority religion during the centuries of Ottoman rule, though a significant Christian minority remained. 
Question: How long has a significant Christian minority remained?

A:
Yes.
****
