With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Song Sung Blue is an album.
text_B: Tempo is a fictional African-American mutant character appearing in American comic books published by Marvel Comics .. Marvel Comics. Marvel Comics. fictional. fictional. African-American. African-American. mutant. Mutant ( Marvel Comics ). She was first introduced as a member of the Mutant Liberation Front in New Mutants -LRB- February 1990 -RRB- .. New Mutants. New Mutants. Mutant Liberation Front. Mutant Liberation Front
not_related.