With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Naproxen relieves stiffness.
text_B: Federica may refer to  :. 12817 Federica -LRB- 1996 FM16 -RRB- , a Main-belt Asteroid discovered in 1996. 12817 Federica. 12817 Federica. Federica Constantini -LRB- born 1988 -RRB- , Italian figure skater. Federica Constantini. Federica Constantini. Federica Faiella -LRB- born 1981 -RRB- , Italian ice dancer. Federica Faiella. Federica Faiella. Federica Falzon -LRB- born 2003 -RRB- , Maltese child opera singer. Federica Falzon. Federica Falzon. Federica Fontana -LRB- born 1977 -RRB- , Italian television sports announcer. Federica Fontana. Federica Fontana. Federica Guzman , -LRB- born 1981 -RRB- , the former Miss Venezuela World 2006. Federica Guzman. Federica Guzman. Federica Haumuller -LRB- born 1972 -RRB- , Argentinian former professional tennis player. Federica Haumuller. Federica Haumuller. Federica Montseny -LRB- 1905 -- 1994 -RRB- , Spanish anarchist , intellectual and Minister of Health. Federica Montseny. Federica Montseny. Federica Pellegrini -LRB- born 1988 -RRB- , Italian swimmer. Federica Pellegrini. Federica Pellegrini. Federica Ridolfi -LRB- born 1974 -RRB- , Italian dancer and a hostess on television. Federica Ridolfi. Federica Ridolfi. Federica Sallusto -LRB- born 1961 -RRB- , Italian biologist. Federica Sallusto. Federica Sallusto. Victoria Federica de Marichalar y de Borbon -LRB- born 2000 -RRB- , daughter of the Duchess and Duke of Lugo , and sixth in the line of succession to the Spanish throne. Victoria Federica de Marichalar y de Borbon. Victoria Federica de Marichalar y de Borbon
not_related.