Rafters in a blue raft battle the river-rapids
There are a group of people in rafts on a river.
Rafters battle the river-rapids implies there are a group of people in rafts.
exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & n_river-rapid(x4) & (x2 = x4) & n_battle(x2) & of(x2,x3) & n_raft(x3) & a_blue(s1) & Theme(s1,x2) & n_rafter(x1))
exists p1 x1 x2 x3.(in(p1,x2) & on(x2,x3) & n_river(x3) & n_raft(x2) & exists x4 x5.((x1 = x4) & of(x4,x5) & n_people(x5) & n_group(x4)))