With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Poland is ranked very highly in agriculture.
text_B: Khilkoff or Khilkov is a Rurikid princely family descending from sovereign rulers of Starodub-on-the-Klyazma .. Rurikid. Rurikid. Starodub-on-the-Klyazma. Starodub-on-the-Klyazma. The descendant of the Great Prince Vladimir Svyatoslavich , the Christianizer of Russia , Prince Ivan Vsevolodovich , -LRB- c. 958 -- 15 July 1015 -RRB- received from his brother , the Great Prince Yaroslav Vsevolodovich , the appanage of Starodub , and this originated the Princes of Starodub ; those who later had the Ryapolovskaya volost took the name Prince Ryapolovsky in the sixteenth century , for an unknown reason , the Ryapolovskys changed their name  : the older branch to Khilkoff , and the younger to Tatev .. Great Prince Vladimir Svyatoslavich. Vladimir I of Kiev. The founder of the Khilkoffs was the great-grandson of Prince Ivan Andreyevich Ryapolovsky -LRB- Nagavitsa -RRB- , Prince Ivan Fyodorovich Khilok .. The Khilkoffs have played a notable part in Russian history .. Under Tsar Alexey Mikhailovich there were 16 noble families whose members rose straight to the rank of boyar , missing out that of okolnichiy ; the Princes Khilkoff were among that number .. Tsar Alexey Mikhailovich. Alexis I of Russia. At the time of the 1917 revolution the Khilkoff family were the 14th wealthiest family in Russia , fleeing Russia to stay with the King of Denmark , then dispersing over Europe .. Khilkoff descendants today live in France , Belgium , United Kingdom , Switzerland , Canada , Australia , and Moscow - the city they founded in 1147 .
not_related.