| http://www.w3.org/ns/prov#value | - m for a roof, a pipework system for a swimming-pool, a pipework system for pressurized air, a pipework system for distributing oil, and/or the pipework system is a pipework system for an industrial facility, in particular a pipework system for wastewater, gas, oil, petroleum, crude oil, diesel oil, gasoline, chemical products, or for other industrial gases, industrial fluids or industrial solids,
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