With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Adolf Hitler declined to join the precursor of the NSDAP.
text_B: Stanley `` Stan '' Rickaby -LRB- 12 March 1924 -- 8 February 2014 -RRB- was an English footballer who played as a right back .. right back. right back
not_related.