With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The X Factor is a music competition.
text_B: Ashley Jackson is a professor of imperial and military history in the Defence Studies Department at King 's College London and a visiting fellow at Kellogg College , University of Oxford .. visiting fellow. visiting fellow. Kellogg College. Kellogg College. Jackson is a specialist in the history of the British Empire .. He argued in 2013 that historians have even extended to a third and fourth empire  :. The first British Empire was largely destroyed by the loss of the American colonies , followed by a ` swing to the east ' and the foundation of a second British Empire based on commercial and territorial expansion in South Asia .. The third British Empire was the construction of a ` white ' dominion power bloc in the international system based on Britain 's relations with its settler offshoots Australia , Canada , New Zealand , and South Africa ... The fourth British Empire , meanwhile , is used to denote Britain 's rejuvenated imperial focus on Africa and South-East Asia following the Second World War and the independence in 1947-8 of Britain 's South Asian dependencies , when the Empire became a vital crutch in Britain 's economic recovery .
not_related.