With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: There is no standard terminology for the name of a central bank, but many countries use the "Bank of [Country]" form—for example: Bank of Canada, Bank of Mexico, Bank of Thailand. The United Kingdom does not follow this rule as its central bank is the Bank of England (which, despite its name, is the central bank of the United Kingdom as a whole). The name's lack of representation of the entire United Kingdom ('Bank of Britain', for example) can be owed to the fact that its establishment occurred when the Kingdoms of England, Scotland and Ireland were separate entities (at least in name), and therefore pre-dates the merger of the Kingdoms of England and Scotland, the Kingdom of Ireland's absorption into the Union and the formation of the present day United Kingdom. 
text_B: Does Bank of England came into existence before the merger of the Kingdoms of England, Scotland and Ireland?
YES.