With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Nina Simone graduated from a performing arts conservatory.
text_B: Brian Battistone and Dann Battistone were the defending champions -LRB- while the tournament was part of the ITF Men 's Circuit -RRB- , but lost in quarterfinals to Martin Fischer and Philipp Oswald .. Brian Battistone. Brian Battistone. Dann Battistone. Dann Battistone. Martin Fischer. Martin Fischer ( tennis ). Philipp Oswald. Philipp Oswald. Phillip Simmonds and Tim Smyczek won the title by defeating Ryan Harrison and Michael Venus 2 -- 6 , 6 -- 1 , -LSB- 10 -- 4 -RSB- in the final .. Phillip Simmonds. Phillip Simmonds. Tim Smyczek. Tim Smyczek. Ryan Harrison. Ryan Harrison ( tennis ). Michael Venus. Michael Venus ( tennis )
not_related.