Complex sentence: Cumulus Media, Inc. (also known as Cumulus Broadcasting) is a large owner of radio stations in markets in the United States with 307 stations in 61 markets as of December 31,2005.
Split into simpler sentences: Cumulus Media, Inc. (also known as Cumulus Broadcasting) is a large owner of radio stations in markets in the United States. Cumulus had 307 stations in 61 markets as of December 31,2005.