Two guys at a bar one dark-skinned and one light-skinned.
Two guys spend time at a bar.
Being at a bar means to spend time at a bar.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & at(x1,x2) & n_thing(x4) & card_eq_1(x4) & n_dark-skinned(x3) & card_eq_1(x3) & of(x3,x5) & n_bar(x5) & subset_of(x4,x2) & subset_of(x3,x2) & a_light-skinned(s1) & Theme(s1,x2) & n_guy(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(at(e1,x3) & n_bar(x3) & Theme(e1,x2) & Actor(e1,x1) & v_spend(e1) & n_time(x2) & n_guy(x1) & card_eq_2(x1))