With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Poland is a constitutional republic.
text_B: The O'Gorman Columbian manuscript -LRB- also known in Spanish as Ordenanza .. Manuscrito Colombino O'Gorman Condumex -RRB- is a document written and signed by Christopher Columbus in the city of Cadiz , Spain , on February 20 , 1493 .. Christopher Columbus. Christopher Columbus. Cadiz. Cadiz. Spain. Spain. It was named after its discoverer , the Mexican historian Edmundo O'Gorman .. Edmundo O'Gorman. Edmundo O'Gorman
not_related.