With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Patty Hearst was traumatized when she was a student.
text_B: Battle of Agordat may refer to  :. First Battle of Agordat -LRB- 1890 -RRB-. First Battle of Agordat. First Battle of Agordat. Second Battle of Agordat -LRB- 1893 -RRB-. Second Battle of Agordat. Second Battle of Agordat. Battle of Agordat -LRB- 1941 -RRB-
not_related.