People sitting and standing talking.
People are quietly watching golf.
People can't be quietly watching golf if they are talking.
exists e3 e1 e2 x1 x2.(for(e2,e3) & Actor(e3,x2) & v_talking(e3) & Actor(e2,x2) & v_stand(e2) & n_people(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))
exists e1 s1 x1 x2.(a_quietly(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_golf(x2) & n_people(x1))