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: EDUCATION 
Clue: In 1836 he became president of Cincinnati College & published his 1st "Eclectic Reader"

SOLUTION: william mcguffey

PROBLEM: Category: OIL PAINTING 
Clue: This painting surface may be linen or cotton & is placed on a frame called a stretcher

SOLUTION: canvas

PROBLEM: Category: SCIENCE & NATURE 
Clue: A male moth's antennae are attuned to these released by female moths

SOLUTION:
pheromones