Load ontology from VOWL JSON file specified by `url`.
Load ontology from VOWL JSON file specified by `url`.

leshek-pawlak/WebVOWL,VisualDataWeb/WebVOWL,leshek-pawlak/WebVOWL,MissLoveWu/webvowl,MissLoveWu/webvowl,VisualDataWeb/WebVOWL