With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Elizabeth II has had visits to or from ten popes.
text_B: Anna de ' Medici -LRB- 31 December 1569 -- 19 February 1584 -RRB- was the third child of Francesco I de ' Medici , Grand Duke of Tuscany , and Joanna of Austria .. Medici. House of Medici. Joanna of Austria. Joanna of Austria, Grand Duchess of Tuscany. She was a member of the famous House of Medici .. Medici. House of Medici. House of Medici. House of Medici
not_related.