About: http://webisa.webdatacommons.org/53638495

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	Now, the condition imposed by the question (at least one kid is a boy) is equivalent of removing all the families with the last case (gg) from the pool.
http://www.w3.org/ns/prov#wasQuotedFrom	fogcreek.com