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.

Ex Input:
lyme regis is a coastal town in west dorset, england, 25 miles west of dorchester and 25 mi east of exeter.

Ex Output:
lyme regis


Ex Input:
srivilliputhur taluk is a taluk of virudhunagar district of the indian state of tamil nadu.

Ex Output:
srivilliputhur taluk


Ex Input:
in an overview of writings by and about richard ponsonby-fane, oclc/worldcat lists roughly 74 works in 136 publications in 2 languages and 1,443 library holdings.

Ex Output:

richard ponsonby-fane