Definition: In this task, you will be presented with a text and a pronoun. You should write the name that the pronoun refers to. Position of the pronoun in the text is showed within two "_"s.
Input: The first caution came out on lap 9 when Aric Almirola got tapped from behind by David Ragan and spun near the entrance to pit road, nearly collecting Travis Kvapil. The race restarted on lap 11, with Busch still leading; Busch would remain there until lap 53, when Dale Earnhardt, Jr. passed him for the lead. With the help of his Busch  _his_ former teammate), Tony Stewart passed Earnhardt, Jr. for the led while entering turn 4. <sep>, Pronoun: his

Tony Stewart