A child is praying in front of a candle.
the child is playing with candle
A child can't be playing and praying
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_candle(x3) & n_front(x2) & Actor(e1,x1) & v_pray(e1) & n_child(x1))
exists e1 x1 x2.(n_child(x1) & with(e1,x2) & n_candle(x2) & Actor(e1,x1) & v_play(e1))