With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Thanos is a character that appeared in multiple products.
text_B: `` Five-star '' is the first greatest hits album by J-pop singer Yuki , released on October 3 , 2007 in Japan .. greatest hits. greatest hits. album. album. J-pop. J-pop. Yuki. Yuki Isoya. Japan. Japan. This album commemorates the fifth anniversary of her solo debut .. album. album. The album was released in two formats , a CD only version and a CD+DVD version , which is in a black-and-silver or white-and-gold leather slipcase .. album. album
not_related.