People walking through a garden in the middle of a city.
The people are on a trip to learn about flowers.
We don't know that people walking through a garden are also on a trip
exists e1 x1 x2 x3 x4 x5.(n_middle(x4) & a_topic(x1) & in(e1,x4) & of(x4,x5) & n_city(x5) & through(e1,x3) & n_garden(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1))
exists p1 x1.(n_people(x1) & exists p2 x2.(on(x1,x2) & Topic(x2,p2) & exists e1 x3.(about(e1,x3) & n_flower(x3) & Actor(e1,x2) & v_learn(e1)) & n_trip(x2)))