About: http://webisa.webdatacommons.org/92009509

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	Features, such as variables, functions, mixins and partials, make it easy to maintain CSS. For example, you could store the value of a common color within a variable, and then use that variable wherever you want to use its value.
http://www.w3.org/ns/prov#wasQuotedFrom	tutsplus.com