Complex sentence: In 2000, The Wooster Book Company took over the sponsorship and administration of the Buckeye Book Fair, Ohio's largest literary event, open-to-the-public with over one hundred authors participating in the annual day-long festival.
Split into simpler sentences: In 2000, The Wooster Book Company took over the sponsorship and administration of the Buckeye Book Fair, Ohio's largest literary event. The Book Fair is open to the public, with approximately one hundred authors participating in the annual day-long festival.