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: louise leakey (born 21 march 1972) is a kenyan paleontologist.

Output: louise leakey


Input: Consider Input: nadia sharmeen (bengali: নাদিয়া শারমীন) is a crime reporter from bangladesh, who writes news stories about crime.

Output: nadia sharmeen


Input: Consider Input: the saint petersburg stadium (russian: Стадион Санкт-Петербург; also called the krestovsky stadium or zenit arena) is an association football stadium in saint petersburg, russia.


Output: saint petersburg stadium