With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Björk has only ever performed on stage.
text_B: Erik Ralske is an American classical horn player .. horn. French horn. He has been principal horn of the Metropolitan Opera Orchestra since 2010 , following seventeen seasons as third horn of the New York Philharmonic .. horn. French horn. Metropolitan Opera. Metropolitan Opera. New York Philharmonic. New York Philharmonic. He was featured horn soloist of the MET 's production of Wagner 's Ring Cycle , and was a soloist on several occasions with the New York Philharmonic , including a performance of Schumann 's Konzertstuck .. horn. French horn. New York Philharmonic. New York Philharmonic. Ring Cycle. Der Ring des Nibelungen. Schumann. Robert Schumann. He is also a member of the orchestra 's Philharmonic Quintet of New York .. Ralske , a native of Long Island , New York , studied at the Juilliard School where he received his Bachelor of Music Degree in 1980 and his Master of Music in 1982 .. Juilliard School. Juilliard School. Prior to joining the New York Philharmonic in 1993 , he was associate principal of the Houston Symphony as well as principal of the Vancouver Symphony , Florida Symphony , and Tulsa Philharmonic .. New York Philharmonic. New York Philharmonic. Houston Symphony. Houston Symphony. Vancouver Symphony. Vancouver Symphony Orchestra. Tulsa Philharmonic. Tulsa Philharmonic. In July 2010 he was offered two principal horn positions in the same week -- with the Metropolitan Opera Orchestra and the Los Angeles Philharmonic .. horn. French horn. Metropolitan Opera. Metropolitan Opera. Los Angeles Philharmonic. Los Angeles Philharmonic. He opted to remain in New York and took up his appointment with the Met at the start of the 2010 / 2011 season .. He has been a member of the faculty at the Juilliard School since 2012 and also teaches at Mannes College The New School for Music , and the Manhattan School of Music .. Juilliard School. Juilliard School. Mannes College The New School for Music. Mannes College The New School for Music. Manhattan School of Music. Manhattan School of Music
not_related.