instruction:
Given a pair of words, deduce the type of relationship between them. The various types of relations are: 'HYPER', 'COORD' and 'RANDOM'. Let's denote the first word by X and the second word by Y. A COORD relationship holds when X and Y belong to the same semantic class. A HYPER relationship applies when X is a specific instance of Y. If niether COORD nor HYPER are applicable then the relationship is RANDOM.
question:
X: chemical, Y: wave
answer:
RANDOM


question:
X: bookcase, Y: good
answer:
RANDOM


question:
X: den, Y: transportation
answer:

RANDOM