premise: A group of people are running on the sand.
hypothesis: A group of people are in class.
explanation_1: There's no sand in class, and unlikely to be any running.
premise_logic: exists e1 x1 x2 x3.(n_sand(x3) & on(e1,x3) & Actor(e1,x1) & v_run(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
hypothesis_logic: exists p1 x1 x2.(exists x3.(in(x1,x3) & n_class(x3)) & of(x1,x2) & n_people(x2) & n_group(x1))
premise_sim: exists e1 x1 x2 x3.(v_run(e1) & on(e1,x3) & of(x1,x2) & n_sand(x3) & n_people(x2) & n_group(x1) & Actor(e1,x1))
hypothesis_sim: exists x1 x2.(of(x1,x2) & n_people(x2) & n_group(x1) & exists x3.(n_class(x3) & in(x1,x3)))