Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

in 1920 the name was changed from fv to sv werder bremen.
werder bremen

jemima shore is a fictional character created by antonia fraser.
jemima shore

the republics of the soviet union or the union republics of the soviet union were administrative units that report directly to the government of the soviet union.

republics of the soviet union