LOTUS

"Hey Wikidata, Which organisms are known to contain quercetin (REFJWTPEDVJJIY-UHFFFAOYSA-N)?"

SELECT DISTINCT ?parent_taxon ?parent_taxonname ?taxon ?taxonname WHERE {
  VALUES ?classes { wd:Q113145171 wd:Q59199015 }
  ?compound wdt:P31 ?classes;
    wdt:P235 "REFJWTPEDVJJIY-UHFFFAOYSA-N". ?taxon wdt:P171 ?parent_taxon.
  { ?compound p:P703 ?stmt. ?stmt ps:P703 ?taxon.
    { ?stmt prov:wasDerivedFrom ?ref. ?ref pr:P248 ?art.
      SERVICE <https://query-scholarly.wikidata.org/sparql> { ?art wdt:P356 ?art_doi. } } }
  ?taxon wdt:P225 ?taxonname. ?parent_taxon wdt:P225 ?parent_taxonname.
}