Where could someone find a blue apple tree?
Options:
- garden center
- washington state
- coloring book
- florida
- math problem Let's give stream of consciousness first:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Apple trees are generally brown and not blue. Blue apple tree means an unreal object and not a real one. Unreal objects are found in colouring books.
Therefore, the answer is coloring book.