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: They probably all contributed as a team to some of the larger commissions later attributed to his brother Francesco Guardi. His sister Maria Cecilia married the pre-eminent Veneto-European painter of his epoch, Giovanni Battista Tiepolo. He may have received his artistic training in Vienna, where he is first recorded in 1719, but had established a workshop in Venice by 1730. Among _his_ first important clients was the connoisseur and collector Johann Matthias von der Schulenburg, for whom Guardi created numerous paintings with an Orientalist theme. <sep>, Pronoun: his <sep>, A: Johann Matthias von der Schulenburg <sep>, B: Guardi
Output:
B