assertion  retraction  graph  subject           predicate            object                                               datatype    annotation
1          0           graph  obo:SYMP_0000504  IAO:0000115          A pain that is characterized by a pain in the head.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www2.merriam-webster.com/cgi-bin/mwmednlm?book=Medical&va=headache""}]}"
1          0           graph  obo:SYMP_0000504  oio:id               SYMP:0000504                                         xsd:string  
1          0           graph  obo:SYMP_0000504  oio:hasDbXref        UMLS_CUI:C0018681                                    xsd:string  
1          0           graph  obo:SYMP_0000504  oio:hasDbXref        ICD9CM_2005:784.0                                    xsd:string  
1          0           graph  obo:SYMP_0000504  rdfs:label           headache                                             xsd:string  
1          0           graph  obo:SYMP_0000504  rdfs:subClassOf      obo:SYMP_0000099                                     _IRI        
1          0           graph  obo:SYMP_0000504  oio:hasExactSynonym  cephalalgia                                          xsd:string  
1          0           graph  obo:SYMP_0000504  oio:hasOBONamespace  symptoms                                             xsd:string  
1          0           graph  obo:SYMP_0000504  oio:hasDbXref        UMLS_ICD9CM_2005_AUI:A0065994                        xsd:string  
1          0           graph  obo:SYMP_0000504  rdf:type             owl:Class                                            _IRI