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 enjoys teasing lifelong friend Burton Guster (Gus), a pharmaceutical representative, about Gus's eclectic interests as they drive around in a blue Toyota Echo nicknamed ``The Blueberry'' solving crimes. Head detective Carlton Lassiter (Timothy Omundson), playfully named ``Lassie'' by Shawn and Gus, quietly respects Shawn's crime-solving skills, but doubts _his_ psychic abilities and is constantly exasperated and/or infuriated by his antics. <sep>, Pronoun: his

Shawn