[IEEE 2018 3rd Digital Heritage International Congress (Digital Heritage) held jointly with 2018 24th International Conference on Virtual Systems & Multimedia (VSMM 2018) - San Francisco, CA, USA (2018.10.26-2018.10.30)] 2018 3rd Digital Heritage International Congress (DigitalHERITAGE) held jointly with 2018 24th International Conference on Virtual Systems & Multimedia (VSMM 2018) - CRM CR - a CIDOC-CRM extension for supporting semantic interoperability in the conservation and restoration domain