Complex sentence: Every year the Moo Duk Hae in Korea has an anniversary celebration where members from all over the world attend, including some members from the Soo Bahk Do Moo Duk Kwan.
Split into simpler sentences: Every year the Moo Duk Hae has an anniversary celebration in Korea, where members from all over the world attend. Attendees include some from the Soo Bahk Do Moo Duk Kwan.