Complex sentence: Juan Rivera (born August 10,1964) is a professional wrestler, best known for his work in the World Wrestling Council, where he won the WWC Universal Heavyweight Championship three times and the WWC Puerto Rico Heavyweight Championship twice.
Split into simpler sentences: Juan Rivera (born August 10,1964) is a professional wrestler. He began his career in the World Wrestling Council, where he has won the WWC Universal Heavyweight Championship three times and the WWC Puerto Rico Heavyweight Championship twice.