Reconstruct a question, answer pair from this explanation: Ecstatic and sad are on opposite ends of the emotional spectrum.

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.
user
Q:Premise: "A little girl is ecstatic after opening a present at her birthday party."
Hypothesis: "A little girl is sad."
Do we know that the hypothesis entailed by the premise?
A:no