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: a group of his hostages nicknamed him "jihadi john" since he was part of a four-person terrorist cell with british accents whom they called "the beatles".

Output: jihadi john


Input: Consider Input: the king of fighters '94 is a 1994 fighting game released by snk for the neo geo arcade and home consoles.

Output: the king of fighters


Input: Consider Input: city designated by government ordinance (政令指定都市, seirei shitei toshi), also known as a designated city (指定都市, shitei toshi) or government ordinance city (政令市, seirei shi), is a defined class or category of japanese cities.


Output: city designated by government ordinance