Random triples
| Subject | Object |
|---|---|
| gptkb:Andamooka_Opal_Fields | matrix opal |
| gptkb:Rainbow_Ridge_Opal_Mine | black opal |
| gptkb:Rainbow_Ridge_Opal_Mine | white opal |
| gptkb:Andamooka_Opal_Fields | crystal opal |
| gptkb:Rainbow_Ridge_Opal_Mine | crystal opal |
| gptkb:Opalton_Opal_Fields | boulder opal |