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.

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

Output: werder bremen

Input: Consider Input: malva is a genus of about 25-30 species of plants commonly called mallows.

Output: malva

Input: Consider Input: herzele is a municipality in the belgian province of east flanders.
Output: herzele