premise: Boys with their backs against an incoming wave.
hypothesis: A group of people stand together.
explanation_1: The group of people are boys and they stand together with their backs against a wave
explanation_2: Boys are a group of people, and with their backs against incoming wave implies stand together.
explanation_3: Boys in plural means group of people.
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 p1 x1 x2.(exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_stand(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 p1 x1 x2.(v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1) & exists s1.(a_together(s1) & Theme(s1,x1)) & Topic(e1,p1) & Actor(e1,x1))