With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: All filming for Arrested Development occurred in Detroit.
text_B: Two destroyers of the British Royal Navy have been named HMS Lookout .. Royal Navy. Royal Navy. The first , a Laforey-class destroyer , was in service 1914 -- 1922 .. destroyer. destroyer. The second was in service 1940 -- 1948 .. Category  : Royal Navy ship names. Royal Navy. Royal Navy
not_related.