With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Night Attack at Târgovişte was ended on June 17, 1462.
text_B: `` De Zusters Karamazov '' -LRB- The Karamazov Sisters -RRB- is a song from 1957 by Dutch poet and writer Drs. P.. song. song. Drs. P. Drs. P
not_related.