empty result sets about hylar-reasoner HOT 2 CLOSED

const fs = require('fs')
const Hylar = require('hylar')

const rawOntology = fs.readFileSync('./db.owl', { encoding: 'utf-8' })

const h = new Hylar()

h.load(rawOntology, 'text/turtle', false)
  .then(main)

main()

async function main () {
  const query = `
    PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
    PREFIX owl: <http://www.w3.org/2002/07/owl#>
    PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
    PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
    PREFIX : <http://www.semanticweb.org/monsterstep/ontologies/2020/4/untitled-ontology-40#>
    SELECT * WHERE {
      ?s ?p ?o
    }
  `
  let results = await h.query(query)

  console.log(results)
}