<https://stad.gent/id/blank_node/b6d6e86b-ffc6-427f-a273-c96c9a151820> <http://www.cidoc-crm.org/cidoc-crm/P32_used_general_technique> <https://stad.gent/id/blank_node/fba633a6-3db7-4fcb-ab54-91e81c8b5f64> .