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.

Q: X: drive, Y: optical

A: RANDOM
****
Q: X: coffee, Y: relational

A: RANDOM
****
Q: X: vest, Y: tree

A:
RANDOM
****