Congratulations, you have found yourself the definition of a Causal Relation.

Causality (also referred to as causation) is the relation between an event (the cause) and a second event (the effect), where the second event is understood as a consequence of the first.

"Causality." Wikipedia, The Free Encyclopedia. Wikimedia Foundation, Inc. 22 July 2004. Web. 10 Aug. 2004.
http://en.wikipedia.org/wiki/Causality