People in costume standing around a tree in a forest.
People are gathered in a house.
The people cannot be in the house and standing around a tree in the forest.
exists s1 x1 x2 x3 x4.(a_topic(x1) & around(x1,x3) & in(x3,x4) & n_forest(x4) & n_tree(x3) & in(x1,x2) & n_standing(x2) & a_costume(s1) & Theme(s1,x2) & n_people(x1))
exists e1 x1 x2.(in(e1,x2) & n_house(x2) & Theme(e1,x1) & v_gather(e1) & n_people(x1))