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.

[Q]: Category: SIMILES 
Clue: The expression this "as a judge" dates back to around 1700
[A]: sober


[Q]: Category: ELEMENT NAMES 
Clue: In 1828 a Norse god thundered onto the periodic table in the name of this element, No. 90
[A]: thorium


[Q]: Category: TREES 
Clue: A tree of the magnolia family is named for the resemblance of its yellow flowers to this bulb flower
[A]:
tulip tree