Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
--------
Question: Which London Underground line connects Euston and Waterloo?

Answer: northern line


Question: The Guarani is the principal unit of currency of which country?

Answer: paraguay


Question: Who played Esmeralda, to Charles Laughton's Quasimodo, in the 1939 version of the film, The Hunchback of Notre Dame?

Answer:
maureen o'hara