With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Big Brother 18 (UK) is hosted by Claudia Winkleman.
text_B: Batticaloa Museum is a small museum , which is located in inside of Batticaloa Fort , Batticaloa .. Batticaloa. Batticaloa. Batticaloa Fort. Batticaloa Fort. It was founded in 1999 .. The museum has rare stuff such as Palm-leaf manuscripts , British era government items , tools and utensils .
not_related.