One person is on a ski lift while another snowboards.
Two boys are playing video games in the living room.
One person is not two boys. And if he is on a ski lift, he is not playing video games in the living room.
exists p1 x1 x2 x3.(n_snowboard(x2) & while(p1,x3) & n_snowboard(x3) & -(x3 = x2) & exists x4 x5.(on(x1,x4) & n_lift(x4) & of(x4,x5) & n_ski(x5)) & n_person(x1) & card_eq_1(x1))
exists e1 x1 x2 x3 x4 x5.(n_room(x4) & of(x4,x5) & n_living(x5) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_game(x2) & of(x2,x3) & n_video(x3) & n_boy(x1) & card_eq_2(x1))