Random triples
| Subject | Object |
|---|---|
| gptkb:Severn_Tunnel | Occasional |
| gptkb:Thames_Tunnel | multiple |
| gptkb:Mosul_Dam | recorded |
| gptkb:Brunel's_Thames_Tunnel | multiple incidents during construction |
| gptkb:The_Thames_Tunnel | multiple |
| gptkb:Poughkeepsie_Bridge | multiple |
| gptkb:Estadio_do_Beira-Rio | gptkb:Yes |