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.
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Question: Sentence: Radio Televizioni Shqiptar (RTSH) is the public radio and TV broadcaster of Albania, founded by King Zog in 1938. 
Question: How long has RTSH been established?

Answer: Yes.


Question: Sentence: I clapped her shoulder to show I was not laughing at her. 
Question: When did they clap her shoulder?

Answer: Yes.


Question: Sentence: Although disruption efforts around the world had achieved some successes, the core of  Bin Laden's organization remained intact. 
Question: What time of day did the organization have a meeting?

Answer:
Yes.


