With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Centralia, Pennsylvania had seven buildings in 2013.
text_B: Ruhul Amin , better known as Shaheed Mohammad Ruhul Amin -LRB- born 1935 -RRB- , was an engine room artificer in the Bangladesh Navy who was posthumously awarded the nation 's highest bravery award , Bir Sreshtho , for his service during the Liberation War .. Shaheed. Shahid. Bangladesh Navy. Bangladesh Navy. Bir Sreshtho. Bir Sreshtho. Liberation War. Bangladesh Liberation War
not_related.