People are running from a fire.
A fire has been burning for 20 minutes.
Just because people are running from a fire does not indicate that a fire has been burning for 20 minutes.
exists e1 x1 x2.(from(e1,x2) & n_fire(x2) & Actor(e1,x1) & v_run(e1) & n_people(x1))
exists e1 x1 x2.(for(e1,x2) & n_minute(x2) & n_date(x2) & a_date_day_20(x2) & a_date_day_20(x2) & Actor(e1,x1) & v_burn(e1) & n_fire(x1))