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.

Example Input: chen zhongshi (; august 1942 – 29 april 2016) was a chinese author.
Example Output: chen zhongshi

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

Example Input: malanje (also malange) is the capital city of malanje province in angola.
Example Output:
malanje