People are having snack. It does not necessarily mean eating orange chicken. A snack can be eaten at many places and not only at a beach.
This justifies what answer for what question? Q & A:
Premise: "There are asian people on a bench enjoying a snack."
Hypothesis: "There are asian people eating orange chicken as a snack on the beach."
Do we know that the hypothesis entailed by the premise?
it is not possible to tell