You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: GEOGRAPHY 
Clue: This Sudanese capital is located at the junction of the Blue & the White Nile

Answer: khartoum


Question: Category: AIRLINE AD SLOGANS 
Clue: "The world's favourite airline"

Answer: british airways


Question: Category: THE MOON 
Clue: The number of times the moon rotates on its axis during each trip around the Earth

Answer:
1