Sentence:The scientific, yet understandable reasons of why the L*Bo Aid is so effective in eliminating and preventing [e1]elbow pain[/e1] due to epicondylitis commonly referred to as "Tennis Elbow" and [e2]tendinitis[/e2].
 e1: elbow pain. 
 e2 : tendinitis.
Answer: Cause-Effect(e2,e1)