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: A CHRISTMAS CAROL 
Clue: "A partridge in a pear tree"

Answer: "the twelve days of christmas"


Question: Category: WOMEN SINGERS 
Clue: The 411 on this R&B singer: her song "Be Without You" was No. 1 in 2006, & her middle initial J. stands for Jane

Answer: mary j. blige


Question: Category: NAVIGATION 
Clue: Navstar, one of these, allows aircraft & ships to determine their position anywhere on Earth

Answer:
a satellite