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: Patricia ``Tricia'' Nixon Cox (born February 21, 1946) is the elder daughter of the 37th U.S. President Richard M. Nixon and First Lady Pat Nixon, and sister to Julie Nixon Eisenhower. In _her_ father's public career, Cox performed a ceremonial role, in contrast to her younger sister Julie Nixon Eisenhower's more political involvement. <sep>, Pronoun: her

Cox