A group of people are standing and conversing inside of a building.
people are planning a surprise party
Standing and conversing doesn't mean planning a surprise party.
exists e2 e1 x1 x2 x3 x4 x5 x6.(Theme(e2,x5) & Actor(e2,x3) & v_converse(e2) & of(x5,x6) & n_building(x6) & n_inside(x5) & of(x3,x4) & n_people(x4) & n_group(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_plan(e1) & n_party(x2) & of(x2,x3) & n_surprise(x3) & n_people(x1))