With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Demi Lovato played a recurring character in Glee.
text_B: The Armed Forces of Ukraine had a large number of Guards units .. Armed Forces of Ukraine. Armed Forces of Ukraine. On 22 August 2016 , as part of a reform of the insignia of the Armed Forces , the Guards titles were removed from the names of the units .. The page lists all former Ukrainian guards units .
not_related.