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: Du Xi (fl. 190s--231), courtesy name Zixu, was an adviser to the warlord Cao Cao in the late Eastern Han dynasty. _He_was a subordinate of Cao Cao's general Xiahou Yuan. <sep>, Pronoun: He

Du Xi