Random triples
| Subject | Object |
|---|---|
| gptkb:Krzemionki_Opatowskie | striped flint |
| gptkb:Tora_quarries | fine white limestone |
| gptkb:Neolithic_Flint_Mines_at_Spiennes_(Mons) | flint |
| gptkb:Neolithische_Feuersteinminen_von_Spiennes | flint |
| gptkb:Neolithic_Flint_Mines_at_Spiennes | flint |
| gptkb:Artemivsk_salt_mines_(tentative) | gptkb:salt |
| gptkb:Mines_de_sel_de_Wieliczka | sel gemme |
| gptkb:Altaussee_salt_mine | gptkb:salt |