Two construction workers discuss work.
Two blue collar workers talk about their professions.
talk and discuss can be the same thing
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_discuss(e1) & n_work(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(about(e1,x3) & n_profession(x3) & of(x3,x1) & n_thing(x1) & Actor(e1,x1) & v_talk(e1) & n_worker(x1) & of(x1,x2) & n_collar(x2) & a_blue(s1) & Theme(s1,x1) & card_eq_2(x1))