Sitting on a doorstep talking.
People are talking about life.
Just because sitting on a doorstep talking does not imply that people are talking about life.
exists e2 e1 x1 x2 x3.(on(e1,x2) & Actor(e2,x3) & v_talking(e2) & (x2 = x3) & n_doorstep(x2) & Actor(e1,x1) & v_sit(e1) & n_thing(x1))
exists e1 x1 x2.(about(e1,x2) & n_life(x2) & Actor(e1,x1) & v_talk(e1) & n_people(x1))