nested_query_with_results.sparql

PREFIX wp:      <http://vocabularies.wikipathways.org/wp#>
PREFIX dcterms:  <http://purl.org/dc/terms/>
PREFIX dc:      <http://purl.org/dc/elements/1.1/> 
SELECT DISTINCT ?metabolite1Label ?mass1 ?mass2 ?metabolite2Label WHERE {
  ?metabolite2 wdt:P2067 ?mass2 .
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  {SELECT * WHERE {
  {SELECT * WHERE {
    ?metabolite1 wdt:P2067 ?mass1 .
    {SELECT * WHERE {
    {SELECT * WHERE {
       ?pathwayItem wdt:P2410 "WP706" ;
                    wdt:P2888 ?pwIri .
       FILTER (?metabolite1 != ?metabolite2)
       SERVICE <http://sparql.wikipathways.org/> {
         ?pathway dc:identifier ?pwIri .
         ?interaction rdf:type wp:Interaction ;
                wp:participants ?wpmb1, ?wpmb2 ;
                dcterms:isPartOf ?pathway .
          ?wpmb1 wp:bdbWikidata ?metabolite1 .
          ?wpmb2 wp:bdbWikidata ?metabolite2 .
         FILTER (?wpmb1 != ?wpmb2)}
     }
    }}}
   }}}
  }
}