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: He has also played for the Kansas City Chiefs. Jackson was signed as an undrafted free agent by the Atlanta Falcons in 2006. In week 7 of his rookie season, Jackson was activated as starting nose guard to replace veteran Pro Bowler Rod Coleman, who is out with a toe injury. In only _his_ second start, Jackson got his first sack in the NFL against the Cleveland Browns. <sep>, Pronoun: his

Jackson