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A manhole, also called utility hole, maintenance hole, or sewer hole, is an opening to a confined space such as a shaft, utility vault, or large vessel. Manholes, typically protected by a manhole cover, are often used as an access point for an underground public utility, allowing inspection, maintenance, and system upgrades. The majority of underground…
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manholes cover also underground sewer typically utility composite gas used access areas telephone electricity covers metal storm usually maintenance services
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| a shaft | instance of | is an opening to a confined space | 0.80 | text |
| utility vault | instance of | is an opening to a confined space | 0.80 | text |
| or large vessel | instance of | is an opening to a confined space | 0.80 | text |
| telephone | instance of | services | 0.80 | text |
| electricity are usually carried on utility poles or even pylons rather than underground.In Australia | instance of | services | 0.80 | text |
| manhole also commonly refers to an access hatch used to get access from a room or hallway into the ceiling cavity of a building | instance of | services | 0.80 | text |
| Manhole | related to Composite manholes | Composite | 0.60 | section |
| Manhole | related to Composite manholes | In | 0.60 | section |
| Manhole | related to Composite manholes | Structures | 0.60 | section |
| Manhole | related to Construction | These | 0.60 | section |
| Manhole | related to Construction | Because | 0.60 | section |
| Manhole | related to Construction | Europe | 0.60 | section |
These clusters group vocabulary that occurs around closely connected concepts in the source material.
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