With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Colombia's armed conflict has decreased from 2005 onward.
text_B: F21 or F-21 may refer to  :. F-21 Kfir , a 1973 Israeli-built all-weather , multi-role combat aircraft. F-21 Kfir. F-21 Kfir. F-21 -LRB- Michigan county highway -RRB-. F 21 Lulea , a Swedish Air Force wing. F 21 Lulea. F 21 Lulea. HMS Punjabi -LRB- F21 -RRB- , a 1937 British Royal Navy Tribal Class destroyer. INS Gomati -LRB- F21 -RRB- , an Indian Navy Godavari-class frigate. Schizotypal personality disorder , whose ICD-10 code is `` F21 ''. Schizotypal personality disorder. Schizotypal personality disorder
not_related.