With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Burundi is only populated by Hutus.
text_B: The 2003 Valencian Community motorcycle Grand Prix was the last round of the 2003 MotoGP Championship .. 2003 MotoGP Championship. 2003 Grand Prix motorcycle racing season. It took place on the weekend of 31 October - 2 November 2003 at the Circuit de Valencia .. Circuit de Valencia. Circuit de Valencia
not_related.