Three men travel through water on a motorized inflatable raft.
Three men are on an adventure up the river.
The fact that men are traveling on water does not imply that the body of water is a river.
exists e1 e2 s1 x1 x2 x3.(on(e1,x3) & n_raft(x3) & a_inflatable(s1) & Theme(s1,x3) & Theme(e2,x3) & v_motorize(e2) & through(e1,x2) & n_water(x2) & Actor(e1,x1) & v_travel(e1) & n_man(x1) & card_eq_3(x1))
exists p1 x1 x3.(n_river(x3) & exists x2.(on(x1,x2) & up(x2,x3) & n_adventure(x2)) & n_man(x1) & card_eq_3(x1))