About: http://webisa.webdatacommons.org/148029109

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	I would assume that whilst they are under the flooring, they would be doing some sort of maintenance and checking, obviously scheduled for each area - being a rather large datacenter.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com