About: http://webisa.webdatacommons.org/342694943

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	It seems to me that it reads both \ref and {x} in two steps and sets it together again while adding another set of braces, i.e. the result is \ref{{x}}.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com