Two boys play in a park fountain.
The boys are eating breakfast at home.
The boys cannot be playing in the park fountain and eating breakfast at home simultaneously.
exists e1 x1 x2 x3.(in(e1,x2) & n_fountain(x2) & of(x2,x3) & n_park(x3) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_boy(x1) & at(e1,x3) & n_home(x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_breakfast(x2))