Original sentence: It is run by PCI which hosts major events at some of the larger game conventions, such as GenCon and particularly Origins Game Fair.Living Arcanis is the name of the Living Campaigns set in the Arcanis setting
Edited sentence: It is run by [PCI|Paradigm Concepts] who hosts major events at large gaming conventions, such as GenCon and Origins Game Fair.Living Arcanis is the name of the Living Campaign set in the Arcanis setting.The core plot of the campaign is closely controlled by [Henry Lopez].There are also several groups of quasi-independent writers who's adventures are sup-plots to the main story and are centered around a specific city, region, or secret society.These domains are known as Invisible Kingdoms and their stewards are known as Invisible Kings and Queens