About: http://webisa.webdatacommons.org/383819208

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	The sunspot cycle is surprisingly hard to predict more than a few years ahead, and the effects of volcanic eruptions only after the eruption itself, so these factors are mostly unknown over most of the forecast.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com