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: accountancy or accounting is the job of sharing financial information about a business to managers and shareholders (people who have invested in the business).
Example Output: accountancy

Example Input: odd future is a group of hip hop musicians from los angeles, united states.
Example Output: odd future

Example Input: a medical abortion is an abortion where drugs are used to induce the abortion.
Example Output:
medical abortion