Little girl and boy playing in the park, with their dog.
The boy and girl are at the park.
if they are in the park then they are at the park.
exists s1 x1 x2 x3 x4 x5.(n_dog(x5) & of(x5,x4) & n_thing(x4) & n_park(x4) & a_topic(x1) & in(x1,x4) & with(x4,x5) & n_playing(x1) & of(x1,x3) & n_boy(x3) & of(x1,x2) & n_girl(x2) & a_little(s1) & Theme(s1,x1))
exists p1 x1 x2 x3 x4.(n_park(x4) & n_girl(x3) & n_boy(x2) & subset_of(x3,x1) & subset_of(x2,x1) & at(x1,x4))