With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lockheed Martin F-22 Raptor is considered critical.
text_B: Clarence Page -LRB- born June 2 , 1947 -RRB- is an American journalist , syndicated columnist , and senior member of The Chicago Tribune editorial board .. The Chicago Tribune. The Chicago Tribune. journalist. journalist. columnist. columnist. editorial board. editorial board
not_related.