People gathered together on a city street.
A boy at the pet store looking for a dog.
It is either people or a boy gathering together or looking for a dog.
exists e1 p1 x1 x2 x3.(on(e1,x2) & n_street(x2) & of(x2,x3) & n_city(x3) & exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_gather(e1) & n_people(x1))
exists e1 s1 x1 x2 x3 x4.(n_store(x2) & a_pet(s1) & Theme(s1,x2) & a_topic(x1) & at(x1,x2) & for(e1,x4) & n_dog(x4) & Actor(e1,x3) & v_look(e1) & (x2 = x3) & n_boy(x1))