With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Splatoon 2 is on the Xbox One.
text_B: A by-election was held on 31 July 2016 to fill vacancies in four districts of the Tokyo Metropolitan Assembly .. by-election. by-election. Tokyo Metropolitan Assembly. Tokyo Metropolitan Assembly. The elections were held simultaneously with the gubernatorial election .. gubernatorial election. Tokyo gubernatorial election, 2016. Nominations for the election were announced on 22 July 2016 .. Liberal Democratic Party candidates won all four elections .. Liberal Democratic Party. Liberal Democratic Party ( Japan )
not_related.