About: http://webisa.webdatacommons.org/401024046

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	The causes of secondary headaches can be associated diseases and conditions such as brain tumors, strokes, meningitis, subarachnoid hemorrhages, caffeine withdrawal or discontinuation of analgesics.
http://www.w3.org/ns/prov#wasQuotedFrom	northshorelij.com