Definition: In this task, you will be presented with a text, a pronoun from the text, and two candidate names. You should determine what the pronoun refers to and classify the answers into A, B, or Neither. A and B here are referring to option A and option B. Position of the pronoun in the text is showed within two "_"s.
Input: Robertson's pioneering, unconventional use of the wah-pedal as an extension of the instrument during soloing rather than as a purely rhythmic effect provided a boost to the band as well. In 1978 Robertson finally left the band and was replaced by guitarist Gary Moore, whom _he_had replaced in 1974. <sep>, Pronoun: he <sep>, A: Robertson <sep>, B: Gary Moore
Output:
A