| http://www.w3.org/ns/prov#value | - Use symbols so that all can understand them. ??? Paths should be reasonably level and free from anything which might cause someone to slip or trip ??? Dug graves awaiting burial should always be covered with appropriate boarding etc ??? Fence off temporarily hazardous areas such as areas where work is being carried out ??? Erect warning signs (with symbols) at particular hazards ??? Lock crypts an
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