One cannot stand on the grass and be on the couch simultaneously.is the reasoning for what question and answer pair?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Q: Given the sentence "A black and white dog stands on the grass with a baseball in his mouth." is it true that "The dog is on the couch."?
A: no