There are two snowboarders, one, who is dressed in white, is doing a trick.
Two snowboarders are in competition with each other.
There are two snowboarders, one, who is dressed in white, is doing a trick does not imply they are in competition with each other.
exists e2 e1 p1 s1 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x2) & v_do(e2) & n_trick(x5) & Theme(e1,s1) & Theme(s1,x4) & a_white(s1) & Theme(e1,x3) & v_dress(e1) & (x2 = x3) & n_thing(x2) & card_eq_1(x2) & exists x6.((x1 = x6) & n_snowboarder(x6) & card_eq_2(x6)))
exists p1 x1.(exists x2.(all x3.(n_other(x3) -> (in(x1,x2) & with(x2,x3))) & n_competition(x2)) & n_snowboarder(x1) & card_eq_2(x1))