A little girl sitting on a playground ride.
The boy left the playground ride.
A girl sitting can not be at the same time a boy.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_ride(x3) & of(x3,x4) & n_playground(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_ride(x2) & a_playground(s1) & Theme(s1,x2) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_leave(e1))