About: http://webisa.webdatacommons.org/72831837

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	These glands have tiny ducts which open onto the edge of the eyelid, and sometimes, for reasons that we do not understand, one of the ducts may become blocked.
http://www.w3.org/ns/prov#wasQuotedFrom	thomaseye.com