With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Heartbreak Ridge was produced by a goldfish.
text_B: Delusion 's Master -LRB- 1981 -RRB- is the third novel in Tales From The Flat Earth by Tanith Lee .. Tanith Lee. Tanith Lee. Tales From The Flat Earth. Tales From The Flat Earth
not_related.