With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Agatha Christie was a novelist.
text_B: The L.A. Mass Choir was an American gospel choir from Los Angeles .. gospel. gospel music. Los Angeles. Los Angeles. The group released several commercially successful albums in the late 1980s and 1990s , and was nominated for Stellar Awards and Gospel Music Excellence Awards .. It was started by Tony Wilkins and Donald Taylor .. Tony Wilkins. Tony Wilkins. Donald Taylor directed the choir .. L.A. Mass Website
not_related.