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: However , by the time Schahzenan's army reaches the city , Scheherazade's plan has worked . 
Question: What happened after Scheherazade's plan had worked?

A: Yes.
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Q: Sentence: But while Ahmadinejad's mercurial rants captured our media's attention, back in Iran a coordinated strategy against the women's movement continued. 
Question: When did Ahmadinejad's ranting begin?

A: Yes.
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Q: Sentence: Grants of tax-free land over the years had been made to Buddhist temples and members of the court aristocracy. 
Question: When were the grants introduced?

A:
Yes.
****
