A brown dog in a field.
The dog on the field is running around
on ius not the same as in a field. the dog is not necessarily running around.
exists s1 x1 x2.(a_topic(x1) & in(x1,x2) & n_field(x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_field(x2) & n_dog(x1) & a_around(s1) & Manner(e1,s1) & Actor(e1,x1) & v_run(e1) & on(x1,x2))