About: http://webisa.webdatacommons.org/137947361

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	Think this guy meant to say where the ratio favours females" i.e. more males this would mean the father would care for the young rather than face stiff competition to woo another female.
http://www.w3.org/ns/prov#wasQuotedFrom	economist.com