With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: David Tennant was on British television.
text_B: Buruburu is a large middle-class residential area in the Eastlands part of Nairobi , Kenya , situated in Makadara Division .. middle-class. middle-class. Nairobi. Nairobi. Kenya. Kenya. Buruburu Estate comprises five phases , one being the oldest , with the fifth completed in 1982 .. Most of the houses resemble modern architecture of white buildings with striking orange tiled roof tops , all built in a town-house orientation .. Buruburu gave rise to modern-day Sheng , a language spoken by virtually all of Nairobi 's youth .. Nairobi. Nairobi. Sheng. Sheng ( linguistics ). Buruburu maintains its original flavor , but more recent developments include expansion of its shopping centre.The estate now has a website named Buruburu Online www.buruburuonline.co.ke which serves as a community website and online market where you can find local events , news , advertisements , businesses , real estate and more .. shopping centre. shopping centre
not_related.