A family waits next to some portable toilets in the city.
A family waits for the bus at a bus stop near portable toilets in the city.
The family could have been waiting for another reason than for the bus and didn't necessarily have to be at a bus stop.
exists e1 p1 x1 x3.(n_city(x3) & exists s1 s2 x2.(to(s1,x2) & in(x2,x3) & n_toilet(x2) & a_portable(s2) & Theme(s2,x2) & Theme(s1,x1) & a_next(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & n_family(x1))
exists s1 x1 x2 x3 x4 x5 x6.(n_city(x6) & a_topic(x1) & for(x1,x3) & at(x3,x4) & near(x4,x5) & in(x5,x6) & n_toilet(x5) & a_portable(s1) & Theme(s1,x5) & n_stop(x4) & of(x4,x3) & n_bus(x3) & n_bus(x3) & n_wait(x1) & of(x1,x2) & n_family(x2))