a little boy plays at the zoo.
A kid on a field trip to the zoo with his school.
zoo. doesn't always mean field trip
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 x1 x2 x3 x4 x5.(n_school(x5) & of(x5,x4) & n_male(x4) & n_zoo(x4) & a_topic(x1) & on(x1,x2) & to(x2,x4) & with(x4,x5) & n_trip(x2) & of(x2,x3) & n_field(x3) & n_kid(x1))