Three men performing on a stage with smoke.
Three men are swallowing their own heads.
Either the men are swallowing their heads or performing with smoke.
exists e1 x1 x2 x3 x4.(a_topic(x1) & with(e1,x4) & n_smoke(x4) & on(e1,x3) & n_stage(x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_man(x1) & card_eq_3(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_swallow(e1) & n_head(x2) & a_own(s1) & Theme(s1,x2) & of(x2,x1) & n_thing(x1) & n_man(x1) & card_eq_3(x1))