Two men in bowler hats and Union Jack underwear perform acrobatics.
Two men are doing acrobatics.
Acrobats sometimes wear bowler hats and Union Jack underwear.
exists e1 x1 x2 x3 x4 x5 x6 x7 x8.(Theme(e1,x8) & Actor(e1,x1) & v_perform(e1) & n_acrobatics(x8) & in(x1,x2) & n_underwear(x4) & (x4 = x7) & ne_geo_jack(x7) & (x4 = x6) & ne_geo_union(x6) & n_hat(x3) & of(x3,x5) & n_bowler(x5) & subset_of(x4,x2) & subset_of(x3,x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_acrobatics(x2) & n_man(x1) & card_eq_2(x1))