Women sitting on stairs talking.
Women are at a party and sitting on stairs and talking.
You can not infer they are at a party.
exists e2 e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & Actor(e2,x4) & v_talk(e2) & (x3 = x4) & n_stair(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_woman(x1))
exists p1 x1.(exists e2 e1 x2 x3 x4 x5 x6.(at(x1,x2) & subset_of(e2,x2) & Actor(e2,x6) & v_talk(e2) & n_thing(x6) & subset_of(e1,x2) & on(e1,x5) & n_stair(x5) & Actor(e1,x4) & v_sit(e1) & n_thing(x4) & subset_of(x3,x2) & n_party(x3)) & n_woman(x1))