About: http://webisa.webdatacommons.org/77797642

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	For this reason, and other reasons, the causes of the collapses of many civilizations (such as the meso-American civilizations) are not well understood, and the explanations are highly speculative and different from each other.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org