Two skateboarders.
two people competeing in a competition
We don't know if people are competeing.
exists s1 x1.(n_skateboarder(x1) & card_eq_2(x1) & a_.(s1) & Theme(s1,x1) & a_topic(x1))
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_competition(x3) & Actor(e1,x2) & v_competee(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))