About: http://webisa.webdatacommons.org/353090382

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	Ann- those are mongolian spots- the area you describe is a very common locale for them- though they can be anywhere. i think I once read that they are the most common birthmark.
http://www.w3.org/ns/prov#wasQuotedFrom	mothering.com