Parents and children are shopping in a flea market for games.
Some people are sleeping.
One cannot be shopping and sleeping at the same time.
exists e1 x1 x2 x3 x4 x5 x6.(in(e1,x4) & for(x4,x6) & n_game(x6) & n_market(x4) & of(x4,x5) & n_flea(x5) & Actor(e1,x1) & v_shop(e1) & n_child(x3) & n_parent(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists e1 x1.(Actor(e1,x1) & v_sleep(e1) & n_people(x1))