With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lockheed Martin F-22 Raptor had operational issues during its development.
text_B: Tang Huo-shen -LRB- ; born 29 October 1956 -RRB- is a Taiwanese politician .. Tang. Tang ( surname ). He was a member of the National Assembly from 1996 to 2000 , and represented Nantou County in the Legislative Yuan between 2002 and 2008 .. Nantou County. Nantou County. Legislative Yuan. Legislative Yuan. National Assembly. National Assembly ( Republic of China )
not_related.