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: Champagne for One is a Nero Wolfe detective novel by Rex Stout, first published by the Viking Press in 1958. The back matter of the 1995 Bantam edition of this book includes an exchange of correspondence between Stout and _his_ editor at Viking Press, Marshall Best. <sep>, Pronoun: his

Rex Stout