Two adults on cellphones downtown.
People are doing something together.
The two adults on their cellphones does not mean they are doing something together and it does not mean they are the same people referenced as being on their cellphones downtown.
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_downtown(x2) & of(x2,x3) & n_cellphone(x3) & n_adult(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(a_together(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_thing(x2) & n_people(x1))