two snowboarders throw up their hands.
two skiers on a mountain
Snowboarders and skiers participate in a different sport with different equipment, they are not the same.
exists e1 s1 x1 x2.(a_up(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_hand(x2) & of(x2,x1) & n_thing(x1) & n_snowboarder(x1) & card_eq_2(x1))
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_mountain(x2) & n_skier(x1) & card_eq_2(x1))