Complex sentence: Throughout the article previously popular examples of convention history are there for example, the 1991 record breaking attendance mark of 1,000 at the Anime con in San Jose California however, currently there are many more attendees as well as expositions to attend.
Split into simpler sentences: Throughout the article previously popular examples of convention history is posted for example, the 1991 record breaking attendance mark of 1,000 at the Anime con in San Jose California. However, currently there are many more attendees as well as expositions to attend.