A young boy plays with another boy on the playground.
Two boys are sitting at a computer.
There is usually not a computer on the playground.
exists e1 s1 x1 x2 x3.(n_playground(x3) & with(e1,x2) & on(x2,x3) & n_boy(x2) & -(x2 = x1) & n_boy(x1) & n_boy(x1) & Actor(e1,x1) & v_play(e1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(at(e1,x2) & n_computer(x2) & Actor(e1,x1) & v_sit(e1) & n_boy(x1) & card_eq_2(x1))