A man on a kayak coming down a raging waterfall
The man is playing hockey.
you cannot play hockey in a kayak
exists e2 e1 x1 x2 x3 x4.(a_topic(x1) & down(e1,x4) & n_waterfall(x4) & Actor(e2,x4) & v_rage(e2) & Actor(e1,x3) & v_come(e1) & (x1 = x3) & on(x1,x2) & n_kayak(x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_hockey(x2))