With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Pink Floyd performed in London.
text_B: Radovesnice I is a village and municipality in Kolin District in the Central Bohemian Region of the Czech Republic .. Region. Regions of the Czech Republic. Central Bohemian Region. Central Bohemian Region. District. Districts of the Czech Republic. Kolin District. Kolin District. Czech Republic. Czech Republic
not_related.