With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Constitutional instruction can be involved with a loss of supply.
text_B: Selo Black Crow -LRB- July 23 , 1932 -- March 5 , 2004 -RRB- was a leader of the Oglala Lakota people , and activist .. Lakota. Lakota people
not_related.