Two adults on cellphones downtown.
Some people are having lunch together.
People cannot be having lunch together or on cellphones downtown at the same time
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_have(e1) & n_lunch(x2) & n_people(x1))