People are standing around watching for something.
Some humans standing.
People are standing is same as humans standing
exists e1 e2 x1 x2.(around(e1,e2) & for(e2,x2) & n_thing(x2) & Actor(e2,x1) & v_watch(e2) & Actor(e1,x1) & v_stand(e1) & n_people(x1))
exists x1 x2.(a_topic(x1) & n_standing(x1) & of(x1,x2) & n_human(x2))