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.

Input: Consider Input: Sentence: Dam Square was landlocked for the first time in its history.
Question: When is it expected to not be landlocked again?

Output: Yes.

Input: Consider Input: Sentence: Martinez works two jobs as a physician's assistant and supports his elderly parents and 8-year-old son.
Question: What does Martinez do after he works?

Output: Yes.

Input: Consider Input: Sentence: Wallace lives in Athens, W. Va., with her husband Rob, 37, and her daughters Rachel, 11, and Claire, 5.
Question: Is Wallace still married?
Output: Yes.