premise: Boys with their backs against an incoming wave.
hypothesis: A group of people sit on the beach.
explanation_1: The waves can come after people sit or stand on the beach.
explanation_2: They can sit or stand.
explanation_3: A group does not have to consist of only boys. Just because there is a wave, does not mean that they are on a beach.
premise_logic: exists s1 x1 x2 x3.(a_topic(x1) & with(x1,x2) & against(x2,x3) & n_wave(x3) & a_incoming(s1) & Theme(s1,x3) & n_back(x2) & of(x2,x1) & n_thing(x1) & n_boy(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_beach(x3) & on(e1,x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
premise_sim: exists s1 x1 x2 x3.(with(x1,x2) & of(x2,x1) & n_wave(x3) & n_thing(x1) & n_boy(x1) & n_back(x2) & against(x2,x3) & a_topic(x1) & a_incoming(s1) & Theme(s1,x3))
hypothesis_sim: exists e1 x1 x2 x3.(v_sit(e1) & on(e1,x3) & of(x1,x2) & n_people(x2) & n_group(x1) & n_beach(x3) & Actor(e1,x1))