Control
An investor controls an investee when it is exposed, or has rights to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee.
Power
Investor possess existing rights that creates current ability to direct the relevant activities of the investee
Return
Has rights to variable returns from its involvement with the investee
Link
The ability to use its power over the investee to affect the amount of the investors return