Simplify the following text for a Grade 11 native English-speaking person.
Original: In the past the circuit has hosted the FIA GT Championship , and a one-off Bahrain Superprix involving Formula Three cars , following on from the collapsed Korea Super Prix .
Simplified: In the past the track has hosted the FIA GT Championship , and a one-time Bahrain Superprix involving Formula Three cars , following from the failure of the Korea Super Prix .