Men standing around talking on cellphones.
Men waiting for the bus talking on cellphones.
Just because men are talking on cell phones does not mean that they're waiting for the bus.
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 e2 x1 x2 x3 x4 x5.(n_bus(x3) & a_topic(x1) & for(e1,x3) & on(e2,x5) & n_cellphone(x5) & Actor(e2,x4) & v_talk(e2) & (x3 = x4) & Actor(e1,x2) & v_wait(e1) & (x1 = x2) & n_man(x1))