With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Chernobyl disaster ultimately involved over 500,000 balls.
text_B: Baiyon is a Japanese multimedia artist from Kyoto , Japan .. Japan. Japan. multimedia artist. multimedia artist. Kyoto. Kyoto. Baiyon , Real name Tomohisa Kuramitsu , has an artistic vision which links his own graphical designs and music .. In 1998 , Kuramitsu began painting and making music , and later founded the Brain Escape Sandwich Recordings label .. As a visual artist , Kuramitsu went by the name Wet Side and applied his unique expression to many things ranging from posters to clothing , and collections of copyright-free graphics .
not_related.