a little boy plays at the zoo.
A boy is at the amusement park.
A boy plays at the zoo can not be at the amusement park.
exists e1 s1 x1 x2.(n_zoo(x2) & at(e1,x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists p1 x1 x2 x3.(n_park(x2) & of(x2,x3) & n_amusement(x3) & at(x1,x2) & n_boy(x1))