People are gathered at a business conference.
People are discussing a new policy.
Just because people are gathered at a conference doesn't mean they are discussing a new policy.
exists e1 x1 x2 x3.(at(e1,x2) & n_conference(x2) & of(x2,x3) & n_business(x3) & Theme(e1,x1) & v_gather(e1) & n_people(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_discuss(e1) & n_policy(x2) & a_new(s1) & Theme(s1,x2) & n_people(x1))