Several men are rollerskating while wearing two distinct uniforms with a ref in the background.
Two guys are competing on skates
several is two or more people.
exists e1 e2 s1 s2 x1 x2 x3 x4.(n_background(x4) & while(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_wear(e2) & with(x2,x3) & in(x3,x4) & n_ref(x3) & n_uniform(x2) & a_distinct(s2) & Theme(s2,x2) & card_eq_2(x2) & Actor(e1,x1) & v_rollerskate(e1) & n_man(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(on(e1,x2) & n_skate(x2) & Actor(e1,x1) & v_compete(e1) & n_guy(x1) & card_eq_2(x1))