About: http://webisa.webdatacommons.org/220185094

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	Irregular periods are a common symptom of polycystic ovary syndrome, a condition in which periods can occur several months apart.
http://www.w3.org/ns/prov#wasQuotedFrom	motherandchildhealth.com