Stato tecnico: terracotta grigia?

https://w3id.org/italia/lombardia/data/technical-status/2p010-00001-5be1e3e2e7be6f5f5f5151d29cac11f2 <https://w3id.org/arco/ontology/denotative-description/TechnicalStatus>

Stato tecnico: terracotta grigia? 
terracotta grigia? 
https://w3id.org/italia/lombardia/data/technical-characteristic/5be1e3e2e7be6f5f5f5151d29cac11f2 
<https://w3id.org/arco/ontology/denotative-description/TechnicalStatus>
<https://w3id.org/italia/lombardia/data/historic-artistic-property/2p010-00001>

data from the linked data cloud