Error parsing node of kind 'ERROR': {Node ERROR (0, 44) - (0, 179)} disease_tree?annotation=eq."{"oio:hasDbXref":[{"datatype":"xsd:string","meta":"owl:Axiom","object":"url:http://sarcomahelp.org/learning_center/mesenchymal_chondrosarcoma.html"}]}" Err("Unexpected Node kind: ERROR")