Stream of consciousness rationale: A band has multiple people in it where as someone is one person. Someone can not be performing on stage and doing a handstand on a sculpture at the same time.
The question and answer pair are described below.
Q: Premise: "Someone is doing a handstand on the top of an outdoor sculpture."
Hypothesis: "A band is performing on stage."
Do we know that the hypothesis entailed by the premise?
A: no