premise: Three people are walking on a beach.
hypothesis: People are swimming in the ocean.
explanation_1: Walking and swimming are two different actions.   The beach is on land, in the ocean refers to actually being I'm the water.
explanation_2: People walking on a beach are not swimming in the ocean.
explanation_3: You can't be swimming and walking at the same time.
premise_logic: exists e1 x1 x2.(on(e1,x2) & n_beach(x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1) & card_eq_3(x1))
hypothesis_logic: exists e1 x1 x2.(n_ocean(x2) & in(e1,x2) & Actor(e1,x1) & v_swim(e1) & n_people(x1))
premise_sim: exists e1 x1 x2.(v_walk(e1) & on(e1,x2) & n_people(x1) & n_beach(x2) & card_eq_3(x1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_swim(e1) & n_people(x1) & n_ocean(x2) & in(e1,x2) & Actor(e1,x1))