TASK DEFINITION: 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.
PROBLEM: Category: AUTHORS 
Clue: This "Oz" author was urged to write his stories by his mother-in-law, noted suffragette Matilda Gage

SOLUTION: baum

PROBLEM: Category: SOME SCIENCE, SOME NATURE 
Clue: The Hawaiian species of this is also known as the nene

SOLUTION: a goose

PROBLEM: Category: "B.B."s 
Clue: A 19th century landfill project created this Boston neighborhood

SOLUTION:
back bay