With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Oscar Robertson is Irish.
text_B: The 2004 Betfair Premier League Snooker was a professional non-ranking snooker tournament that was played from 10 January to 14 March 2004 .. Betfair. Betfair. Premier League Snooker. Premier League Snooker. ranking. Snooker world rankings. snooker. snooker. Stephen Hendry won in the final 9 -- 6 against John Higgins .. Stephen Hendry. Stephen Hendry. John Higgins. John Higgins ( snooker player )
not_related.