About: http://webisa.webdatacommons.org/91788725

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	Since you already know that one of the children is a boy, the posterior probability that they are both boys is 50%.
http://www.w3.org/ns/prov#wasQuotedFrom	lesswrong.com