instruction:
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:
What is the largest city in India?
answer:
calcutta


question:
Which actor played Al Jolson in The Jolson Story and it sequel?
answer:
larry parks


question:
By political definition, what is the essential difference between Great Britian and United Kingdom?
answer:

northern ireland