An aircraft is standing with a gothic building in the back.
an aircraft at a musium
The aircraft isn't necessarily at a musium.
exists e1 s1 x1 x2 x3.(n_back(x3) & with(e1,x2) & in(x2,x3) & n_building(x2) & a_gothic(s1) & Theme(s1,x2) & Actor(e1,x1) & v_stand(e1) & n_aircraft(x1))
exists x1 x2.(a_topic(x1) & at(x1,x2) & n_musium(x2) & n_aircraft(x1))