About: http://webisa.webdatacommons.org/108863228

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	doesnt work with freebsd. as stated above the clock ticks at different intervals on different platforms.for system uptime consider piping the uptime command or similar, depending on if performance is an issue or not.
http://www.w3.org/ns/prov#wasQuotedFrom	php.net