Complex sentence: In 2015, Mann returned to the Dale Coyne Racing Team for the 99th Indianapolis 500 qualifying 25th for her 4th appearance with a 4 lap average speed of 223.104 mph starting from the inside of row 9.
Split into simpler sentences: In 2015, Mann returned to the Dale Coyne Racing Team for the 99th Indianapolis 500. She qualifying 25th for her 4th appearance with a 4 lap average speed of 223.104 mph, starting from the inside of row 9.