About: http://webisa.webdatacommons.org/301282558

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	Protocols vary, but generally say that if the dates very by more than one week, or by ten days according to some protocols, especially if LMP is uncertain for any reason, then the ultrasound date is used.
http://www.w3.org/ns/prov#wasQuotedFrom	motherbloommidwifery.com