Complex sentence: Epsilonism is a term used to describe an eschatologist conspiracy theory trend, usually (but not always) revolving around the so-called Epsilon Team; it was introduced and propagated approximately around 1997 through Greek magazines and books whose subject is conspiracy theories and the paranormal.
Split into simpler sentences: Epsilonism is a term used to describe an eschatological conspiracy theory, usually (but not always) revolving around the so-called Epsilon Team. It was introduced and propagated around 1997 through Greek magazines and books whose subject is conspiracy theories and the paranormal.