A person is kayaking on a river and is steering himself in between two large rocks.
A human kayaks in a river.
A human is a person, and the person is located on the river.
exists e1 e2 s1 x1 x2 x3 x4.(in(e2,x4) & n_rock(x4) & a_large(s1) & Theme(s1,x4) & card_eq_2(x4) & r_between(x4) & Theme(e2,x1) & Actor(e2,x3) & v_steer(e2) & n_male(x1) & n_person(x3) & on(e1,x2) & n_river(x2) & Actor(e1,x1) & v_kayake(e1) & n_person(x1))
exists s1 x1 x2.(a_topic(x1) & in(x1,x2) & n_river(x2) & n_kayak(x1) & a_human(s1) & Theme(s1,x1))