With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Entire History of You was the only episode not written by Andrei Tarkovsky.
text_B: The Caritni , a Latinization , or the Karitnoi in the Greek of Ptolemy 's Geography -LRB- 2.10 -RRB- , were a Germanic tribe mentioned by the Roman scholar Ptolemy generally in the region of west Bavaria .. Ptolemy. Ptolemy. Germanic tribe. Germanic peoples. Roman. Ancient Rome. Bavaria. Bavaria. Little else is known about them .
not_related.