With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Led Zeppelin put out the album Led Zeppelin in 1969.
text_B: Heidi MacDonald -LRB- born November 15 -RRB- is an American writer and editor in the field of comic books based in New York City .. American. People of the United States. comic books. comic books. New York City. New York City
not_related.