With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Black Sabbath released a debut album of the same name in 1970.
text_B: Black Sabbath is the debut studio album by the English rock band Black Sabbath .. Black Sabbath. Black Sabbath. rock. Rock music. Released on 13 February 1970 in the United Kingdom and on 1 June 1970 in the United States , the album reached number eight on the UK Albums Charts and number 23 on the Billboard charts .. Although it was poorly received by most contemporary music critics at the time , Black Sabbath is now widely considered the first heavy metal album .. Black Sabbath. Black Sabbath. heavy metal. heavy metal music
related.