About: http://webisa.webdatacommons.org/85185349

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	Just a few grade steps but a lot more effort to invest.Here is an example, showing the evolution of grades in route climbing (sport climbing, not trad climbing), starting with 7b+.
http://www.w3.org/ns/prov#wasQuotedFrom	8a.nu