With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: One engineer was Henri Poincare.
text_B: Fanning 's Castle -LRB- Caislean Ui Fhionain -RRB- , also called Whitamore 's Castle , is the remains of a tower house and National Monument located in Limerick , Ireland .. Limerick. Limerick. Ireland. Republic of Ireland. tower house. Tower houses in Britain and Ireland. National Monument. National Monument ( Ireland )
not_related.