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: ADD A LETTER 
Clue: Confer if you wish, but if you add a letter to "confer", it becomes this type of evergreen

Answer: conifer


Question: Category: ROCK AROUND AMERICA 
Clue: The house where this Janis Joplin band was formed once stood at 1090 Page Street in San Francisco

Answer: big brother and the holding company


Question: Category: COMPOSERS 
Clue: The Czech subtitle of this Dvorak symphony is "Z noveho sveta"

Answer:
"new world symphony"