Which building in London contains a slab on the floor marking the tomb of an `Unknown Warrior` of World War I?
which building in london contains a slab on the floor marking the tomb of an `unknown warrior` of world war i
FreebaseQA-train-11943.P0 FreebaseQA-train-11943.P1
london unknown warrior
london the unknown warrior
m.04jpl m.01ckd2
travel.travel_destination.tourist_attractions people.deceased_person.place_of_burial
m.0bvqq
westminster abbey
m.0bvqq
westminster abbey