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.

Example Input: Sentence: Finley only realizes with hindsight that his misdeeds far surpass those of Violet . 
Question: What time does Finley most likely go to bed?
Example Output: No.

Example Input: Sentence: That amount is convertible into shares of Meridian common stock at $2 a share during its one-year term. 
Question: How long has the stock been 2 dollars per share?
Example Output: No.

Example Input: Sentence: The person may walk a half mile in the wrong direction!. 
Question: How does the person walk in the wrong direction?
Example Output:
No.

