With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Paul Simon is a singer.
text_B: Parliamentary elections were held in Cameroon on 30 September 2013 , alongside local elections .. Cameroon. Cameroon. They were originally scheduled for July 2012 , February 2013 and July 2013 , but were repeatedly postponed .
not_related.