Random triples
| Subject | Object |
|---|---|
| gptkb:angel_and_devil_game | 2006 |
| gptkb:English_draughts | 2007 |
| gptkb:Checkers_(board_game) | 2007 |
| gptkb:tournament_checkers | 2007 |
| gptkb:American_checkers | 2007 |
| gptkb:Clay_Millennium_Prize_Problem | 2003 |
| gptkb:Lawson's_conjecture | 2012 |