GWSW Ontologie
| Naam | Porous wall (manhole) - CirLoc  |
| URI | DANg |
| Datum start/wijz | 2015-10-14 |
| Heeft kenmerk | +Omtreklocatie 2 [max=1] |
| Is kenmerk van | +Inlaat [inverse] |
| Poreuze wand (put) (DAN) [inverse] |
| Is type | Circumferential location - 1 opt. 2 |