A shirtless guy performing a trick on a small bicycle.
The man in a sweater performs stunts on a skateboard.
A shirtless guy cannot be in a sweater and while the other performs a trick on a bicycle while the other stunts on a skateboard.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_bicycle(x4) & a_small(s2) & Theme(s2,x4) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & n_trick(x3) & (x1 = x2) & n_guy(x1) & a_shirtless(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(n_man(x1) & on(e1,x4) & n_skateboard(x4) & Theme(e1,x3) & Actor(e1,x1) & v_perform(e1) & n_stunt(x3) & in(x1,x2) & n_sweater(x2))