With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Dracula is a written work.
text_B: Stirling is a city and former ancient burgh in Scotland , and is at the heart of the wider Stirling council area .. Stirling. Stirling. Stirling may also refer to  :. Stirling. Stirling
not_related.