With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The re-launching of Hopper's career was credited to Blue Velvet.
text_B: Two ships of the British Royal Navy have been named HMS Bluebell , after the bluebell flower .. Royal Navy. Royal Navy. bluebell. Common Bluebell. was an sloop in service from 1915 to 1930 .. sloop. sloop-of-war. was a launched in 1940 and sunk by a torpedo in 1945 .. Category  : Royal Navy ship names. Royal Navy. Royal Navy
not_related.