Complex sentence: Ted Leonsis, who bought the Capitals in 1999, began looking to build a new practice facility and in 2004, the team secured agreements with Arlington County to build a new rink on top of the Ballston Public Parking Garage.
Split into simpler sentences: Ted Leonsis, who bought the Capitals in 1999, began looking to build a new practice facility. In 2004, the team secured agreements with Arlington County to build a new rink on top of the Ballston Public Parking Garage.