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: jesse helms (october 18, 1921 - july 4, 2008) was a senator from north carolina.
Example Output: jesse helms

Example 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".
Example Output: jihadi john

Example Input: dje, or djerv (Ђ, ђ) is the sixth letter of the serbian cyrillic alphabet, used in the serbian language to represent the sound for need to tell /dʑ/, a palatalisation, similar to the english sound of letter "j" .
Example Output:
dje