→ skos:prefLabel → "5.2.1. Make the maintenance proactive"
→ skos:example → "Oil indicator", "Rank Xerox machine: equipped with automatic systems to supervise the usury conditions of the parts that periodically needed to be substituted"
→ od:Suggestion → "Introduce indicators that allow to know product state, in order to plan the necessary actions on time"
→ od:hasLevel → "Level_3"