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: His father, Eduard Avenarius, a publisher from Leipzig, founded a joint subsidiary company with the Brockhaus publishing house. His mother, C*cilie n*e Geyer, was a daughter of the actor and painter Ludwig Geyer. Eduard Avenarius represented the company in Paris, where he consorted with Heinrich Heine and Richard Wagner, the latter being the stepuncle of Ferdinand Avenarius and _his_ brother, the philosopher Richard Avenarius. <sep>, Pronoun: his

Ferdinand Avenarius