With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Renaissance began in Florence and spread to the rest of Europe.
text_B: Rudy The Fifth is Ricky Nelson and the Stone Canyon Band 's country rock album that was released on October 4 , 1971 .. Ricky Nelson. Ricky Nelson. country rock. country rock
not_related.