With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Billy Ray Cyrus co-starred on Hannah Montana with Miley Cyrus.
text_B: The Golden Jubilee Medal was instituted in 1887 by Royal Warrant as a British decoration to be awarded to participants of Queen Victoria 's golden jubilee celebrations .. Queen Victoria. Queen Victoria. golden jubilee. Golden Jubilee of Queen Victoria
not_related.