With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Room is a film.
text_B: Presidential elections were held in Bangladesh on 3 June 1978 .. Bangladesh. Bangladesh. They were the first public elections for President , who had previously been elected by Parliament .. President. President of Bangladesh. The result was a victory for Ziaur Rahman , who won 76.6 % of the vote .. Ziaur Rahman. Ziaur Rahman. Turnout was 54.3 % .
not_related.