Men in shorts rock climbing.
Men are rock climbing.
men in shorts climbing can also be said as men are climbing
exists x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & n_climb(x2) & of(x2,x4) & n_rock(x4) & of(x2,x3) & n_shorts(x3) & n_man(x1))
exists e1 x1 x2.(Time(e1,x2) & n_rock(x2) & Actor(e1,x1) & v_climb(e1) & n_man(x1))