premise: A group of people are sitting under umbrellas on the beach.
hypothesis: It is a saturday
explanation_1: Just because people are sitting under umbrellas on the beach doesn't mean it is a Saturday.
explanation_2: Any day whether it saturday, sunday etc people can sit on beach
explanation_3: A group of people in the beach doesn't have to be on Saturday.
premise_logic: exists e1 x1 x2 x3 x4.(n_beach(x4) & on(e1,x4) & under(e1,x3) & n_umbrella(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
hypothesis_logic: exists p1 x1.(n_thing(x1) & exists x2.((x1 = x2) & n_saturday(x2)))