Complex sentence: Owned by the Austrian company Red Bull, they play at Red Bull Arena, a soccer-specific stadium in Harrison, New Jersey completed in 2010 with a capacity of just over 25,000.
Split into simpler sentences: Owned by the Austrian company Red Bull, they play in a new stadium in Harrison, New Jersey that was completed in 2010. The venue, named Red Bull Arena, is a soccer-specific stadium with a capacity of just over 25,000.