Children at maybe, at their School, or maybe, a Field trip.
The children are home eating dinner with their parents.
The children cannot both be on a field trip and home.
exists x1 x2 x3.(((a_topic(x1) & at(x1,x2) & at(x2,x3)) | exists x4 x5 x6 x7.(a_topic(x1) & at(x1,x2) & at(x2,x4) & subset_of(x6,x4) & n_trip(x6) & of(x6,x7) & n_field(x7) & subset_of(x5,x4) & n_maybe(x5))) & n_school(x3) & of(x3,x1) & n_thing(x1) & n_maybe(x2) & n_child(x1))
exists e1 x1 x2 x3 x4.(n_parent(x3) & of(x3,x1) & n_thing(x1) & n_child(x1) & Time(e1,x4) & n_home(x4) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & with(x2,x3) & n_dinner(x2))