premise: A group of people standing on rafts with a waterfall in the background.
hypothesis: A group of people swim fast from a shark.
explanation_1: The group of people cannot be standing on rafts and swim at the same time.
explanation_2: Swimming is different from standing.
explanation_3: If they are standing on rafts then they shouldn't need to swim from a shark.
premise_logic: exists e1 x1 x2 x3 x4 x5 x6.(n_background(x6) & a_topic(x1) & of(x1,x2) & with(e1,x5) & in(x5,x6) & n_waterfall(x5) & on(e1,x4) & n_raft(x4) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
hypothesis_logic: exists e1 s1 x1 x2 x3.(a_fast(s1) & Manner(e1,s1) & from(e1,x3) & n_shark(x3) & Actor(e1,x1) & v_swim(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
premise_sim: exists e1 x1 x2 x3 x4 x5 x6.(with(e1,x5) & v_stand(e1) & on(e1,x4) & of(x1,x2) & n_waterfall(x5) & n_raft(x4) & n_people(x2) & n_group(x1) & n_background(x6) & in(x5,x6) & a_topic(x1) & Actor(e1,x3) & (x2 = x3))
hypothesis_sim: exists e1 s1 x1 x2 x3.(v_swim(e1) & of(x1,x2) & n_shark(x3) & n_people(x2) & n_group(x1) & from(e1,x3) & a_fast(s1) & Manner(e1,s1) & Actor(e1,x1))