_:nbe9021e5b0464abc846f0e7f81e9b766xb0
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Article>
<https://www.astronomy.com/news/2015/05/astronomers-baffled-by-discovery-of-rare-quasar-quartet>