A man steers a speeding jet ski through a turn.
A person on a jet ski.
A man is a person, and if someone steers a jet ski they are on a jet ski.
exists e1 s1 x1 x2 x3 x4.(through(e1,x4) & n_turn(x4) & Theme(e1,x2) & Actor(e1,x1) & v_steer(e1) & n_ski(x2) & of(x2,x3) & n_jet(x3) & a_speeding(s1) & Theme(s1,x2) & n_man(x1))
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_ski(x2) & of(x2,x3) & n_jet(x3) & n_person(x1))