With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: To Kill a Mockingbird was written by a man.
text_B: Troon railway station can refer to one of several railway stations in and around the town of Troon , South Ayrshire , Scotland  :. Troon railway station. Troon railway station. Troon railway station -LRB- current -RRB-. Troon railway station. Troon railway station. Troon -LRB- Harbour -RRB- railway station -LRB- closed -RRB-. Troon -LRB- old -RRB- railway station -LRB- closed -RRB-. Troon Goods railway station -LRB- closed -RRB-. It also refers to a metro station in Brussels , Belgium  :. Brussels. Brussels. Belgium. Belgium. Trone  /  Troon metro station
not_related.