With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Richmond, Virginia is in the region between New England and South-Atlantic states of the United States.
text_B: The House of Rohan is a French noble family of viscounts , later dukes and princes , coming from the locality of Rohan in Brittany .. French noble. French nobility. Rohan. Rohan ( commune ). Brittany. Brittany. Their line descends from the viscounts of Porhoet and is said to trace back to the legendary Conan Meriadoc .. Porhoet. Porhoet. Conan Meriadoc. Conan Meriadoc. Through the Porhoet , the Rohan are related to the Dukes of Brittany , with whom the family intermingled again after its inception .. Rohan. Rohan ( commune ). Brittany. Brittany. Porhoet. Porhoet. Dukes of Brittany. Dukes of Brittany. They developed ties with the French and English royal houses as well , and played an important role in France and European history .. France. History of France. European history. History of Europe
not_related.