premise: A group of seven individuals wearing rafting gear, white water raft down a river.
hypothesis: There are people in an inflatable boat.
explanation_1: Seven individuals are people, and inflatable boat is raft.
explanation_2: There are people refers to a group of seven individuals and as  wearing rafting gear, white water raft down a river means in an inflatable boat.
explanation_3: If there's a group of seven there are people.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & rel(x4,x6) & down(x6,x8) & n_river(x8) & n_raft(x6) & of(x6,x7) & n_water(x7) & a_white(s1) & Theme(s1,x6) & n_gear(x4) & of(x4,x5) & n_rafting(x5) & (x2 = x3) & n_individual(x2) & card_eq_7(x2) & n_group(x1))
hypothesis_logic: exists p1 x1 s1 x2 x3.((x1 = x2) & in(x2,x3) & n_boat(x3) & a_inflatable(s1) & Theme(s1,x3) & n_people(x2))
premise_sim: exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(v_wear(e1) & rel(x4,x6) & of(x6,x7) & of(x4,x5) & of(x1,x2) & n_water(x7) & n_river(x8) & n_rafting(x5) & n_raft(x6) & n_individual(x2) & n_group(x1) & n_gear(x4) & down(x6,x8) & card_eq_7(x2) & a_white(s1) & a_topic(x1) & Theme(s1,x6) & Theme(e1,x4) & Actor(e1,x3) & (x2 = x3))
hypothesis_sim: exists x1 s1 x2 x3.(n_people(x2) & n_boat(x3) & in(x2,x3) & a_inflatable(s1) & Theme(s1,x3) & (x1 = x2))