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: Petersburg in 1842, Semyon Gulak-Artemovsky became a soloist of the Imperial Opera at the Imperial Bolshoi Kamenny Theatre, a position he held for 22 years. In 1852 and 1853 he sang roles in Anton Rubinstein's first two operas, Dmitry Donskoy and Fomka the Fool. Gulak-Artemovsky performed at the Bolshoi Theatre in Moscow from 1864 to 1865. He performed over fifty operatic roles during _his_ career, including Ruslan in Glinka's Ruslan and Lyudmila, Masetto in Mozart's Don Giovanni, as well as Antonio and Lord Ashton in Donizetti's Linda di Chamounix and Lucia di Lammermoor. <sep>, Pronoun: his <sep>, A: Ruslan <sep>, B: Glinka

A