A guy and girl playing a board game on the floor.
A guy and a girl sit on the couch talking
If they are on the floor they can't be sitting on a couch.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_floor(x6) & a_topic(s1) & on(e1,x6) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_game(x4) & of(x4,x5) & n_board(x5) & (s1 = x3) & n_girl(x2) & n_guy(x1) & subset_of(x2,s1) & subset_of(x1,s1))
exists e2 e1 x1 x2 x3 x4 x5.(n_couch(x4) & on(e1,x4) & Actor(e2,x5) & v_talk(e2) & (x4 = x5) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_girl(x3) & subset_of(x2,x1) & n_guy(x2))