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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: '60s ROCK 
Clue: In July 1967 this group's "Light My Fire" became Elektra Records' first No. 1 single

SOLUTION: the doors

PROBLEM: Category: SCIENCE GRAB BAG 
Clue: A material called URhGe can be manipulated into being this, lacking electrical resistance

SOLUTION: superconductors

PROBLEM: Category: THE U.S. 
Clue: West Quoddy Head in this state is the easternmost point in the U.S.; East Quoddy Head is in Canada

SOLUTION:
maine