A girl with a backpack and a boy on a bike are standing at a crosswalk.
children waiting for the bus
Not every group of children waiting at a crosswalk are waiting for the bus.
exists e1 x1 x2 x3 x4 x5 x6.(at(e1,x6) & n_crosswalk(x6) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & subset_of(x4,x2) & on(x4,x5) & n_bike(x5) & n_boy(x4) & subset_of(x3,x2) & n_backpack(x3) & n_girl(x1))
exists e1 x1 x2 x3.(n_bus(x3) & a_topic(x1) & for(e1,x3) & Actor(e1,x2) & v_wait(e1) & (x1 = x2) & n_child(x1))