With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Henry VIII of England was continually on the verge of buying more books.
text_B: Dustin Brown and Philipp Marx were the defending champions , but did not compete together this year .. Dustin Brown. Dustin Brown ( tennis ). Philipp Marx. Philipp Marx. Brown partnered Christopher Kas and lost in the quarterfinals .. Christopher Kas. Christopher Kas. Marx partnered Mateusz Kowalczyk and lost in the first round .. Mateusz Kowalczyk. Mateusz Kowalczyk. Ruben Bemelmans and Niels Desein won the title , defeating Andreas Beck and Philipp Petzschner in the final , 6 -- 3 , 4 -- 6 , -LSB- 10 -- 8 -RSB- .. Ruben Bemelmans. Ruben Bemelmans. Niels Desein. Niels Desein. Andreas Beck. Andreas Beck ( tennis ). Philipp Petzschner. Philipp Petzschner
not_related.