Men standing around talking on cellphones.
People are waiting for the subway.
Sentence 2 can refer to different people.
exists e1 e2 x1 x2 x3.(a_topic(x1) & around(e1,e2) & on(e2,x3) & n_cellphone(x3) & Actor(e2,x2) & v_talk(e2) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_subway(x2) & for(e1,x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))