About: http://webisa.webdatacommons.org/33212681

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	Darwin had observed the competitive advantage species can gain from a well-developed social instinct but had difficulty in explaining its evolution, particularly with respect to parental affections for their offspring.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com