assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:0080704 IAO:0000115 A medulloblastoma SHH activated that is characterized as a molecular subtype by activation of the sonic hedgehog (SHH) pathway and the presence of TP53 mutations. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://ascopubs.org/doi/10.1200/JCO.2012.48.5052""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5490254/""}]}"