People stand along the sidewalk watching a bus come their way.
People are standing in line at the grocery store.
People standing on a sidewalk watching a bus cannot also be in line at a grocery store.
exists e1 e2 e3 x1 x2 x3 x4 x5 x6.(n_way(x6) & of(x6,x2) & n_thing(x2) & n_sidewalk(x2) & along(e1,x2) & Theme(e3,x4) & Actor(e3,x3) & v_watch(e3) & Theme(e2,x6) & Actor(e2,x5) & v_come(e2) & (x4 = x5) & n_bus(x4) & (x2 = x3) & Actor(e1,x1) & v_stand(e1) & n_people(x1))
exists e1 x1 x2 x3 x4.(n_store(x3) & of(x3,x4) & n_grocery(x4) & at(e1,x3) & in(e1,x2) & n_line(x2) & Actor(e1,x1) & v_stand(e1) & n_people(x1))