message: wrong delete of functino content reverted and improved storybook
diff: +import { IndexedFormula, parse } from 'rdflib'
  +
  +export async function loadTurtleIntoGraph (rawText: string, graphUri: string, graph: IndexedFormula): Promise<void> {
  + return new Promise((resolve, reject) => parse(rawText, graph, graphUri, 'text/turtle', error => {
  + if (error) return reject(error)
  + resolve()
  + }))
  +}
  