With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Buddy Holly influenced Eric Clapton
text_B: Arkina district was the part of the medieval Armenian city of Ani where , in 990 , Trdat the Architect completed the building of the Mother Cathedral of Ani .. medieval. medieval. Armenian. Armenians. city. city. Ani. Ani ( Turkey ). Trdat the Architect. Trdat the Architect. Mother Cathedral of Ani. Cathedral of Ani. Category  : History of Armenia
not_related.