A boy kicks a ball in his living room.
A girl is playing with a ball outside.
A boy is not a girl.  Living rooms are not outside.
exists e1 x1 x2 x3 x4.(in(e1,x3) & n_room(x3) & of(x3,x4) & n_living(x4) & of(x3,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_kick(e1) & n_ball(x2) & n_boy(x1))
exists e1 x1 x2 x3.(with(e1,x2) & n_outside(x2) & of(x2,x3) & n_ball(x3) & Actor(e1,x1) & v_play(e1) & n_girl(x1))