With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A gray wolf will not eat farm animals.
text_B: Jan Fredrik Christiansen -LRB- born April 1 , 1942 -RRB- was principal trumpeter with the Oslo Philharmonic Orchestra from 1973 until 2007 .. trumpeter. trumpeter. Oslo Philharmonic Orchestra. Oslo Philharmonic Orchestra. Christiansen is also professor at the Norwegian Academy of Music and principal trumpet of the Oslo Sinfonietta .. Norwegian Academy of Music. Norwegian Academy of Music. Oslo Sinfonietta. Oslo Sinfonietta. He joined the Philharmonic in 1966 and became principal in 1973 , replacing Harry Kvebæk , and has performed in all of the orchestra 's recordings since that time .. Harry Kvebæk. Harry Kvebæk. He was a student of Harry Kvebæk , William Overton and Adolph Herseth .. Harry Kvebæk. Harry Kvebæk. Adolph Herseth. Adolph Herseth. In 1985 he premiered Olav Anton Thommessen 's trumpet concerto The Second Creation .. Olav Anton Thommessen. Olav Anton Thommessen. concerto. concerto
not_related.