With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Chainsmokers had a single.
text_B: Franz Anton Spitzeder -LRB- 1735 -- 1796 -RRB- was a German tenor and keyboard teacher .. tenor. tenor. keyboard. Keyboard instrument. Spitzeder was born in Traunstein and educated in Salzburg , where in 1759 he found employment as a court singer .. Traunstein. Traunstein. Salzburg. Salzburg. He sang the part of Der Christgeist -LRB- The Christian Spirit -RRB- in the premiere of Die Schuldigkeit des ersten Gebots and created the role of Don Polidoro in La finta semplice .. Die Schuldigkeit des ersten Gebots. Die Schuldigkeit des ersten Gebots. La finta semplice. La finta semplice. He died near Aigen .
not_related.