@prefix ex: <https://qlever.dev/.well-known/sparql-examples/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <https://schema.org/> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix spex: <https://purl.expasy.org/sparql-examples/ontology#> .

ex:cross_kingdom_homonyms_gbif a sh:SPARQLExecutable,
        sh:SPARQLSelectExecutable ;
    rdfs:label "Cross-kingdom homonyms, gbif" ;
    rdfs:comment "In taxanomy multiple taxa exist with the same name. This query lists them"^^rdf:HTML ;
    sh:select """PREFIX gbif:   <https://rs.gbif.org/terms/>
PREFIX status: <https://rs.gbif.org/terms/status/>
PREFIX rdfs:   <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dwc:    <http://rs.tdwg.org/dwc/terms/>
SELECT ?name ?rank ?kingdomA ?kingdomB ?a ?b WHERE {
  ?a rdfs:label ?name ; gbif:rank ?rank ; gbif:taxonomicStatus status:accepted ; dwc:kingdom ?kingdomA .
  ?b rdfs:label ?name ; gbif:rank ?rank ; gbif:taxonomicStatus status:accepted ; dwc:kingdom ?kingdomB .
  FILTER(STR(?a) < STR(?b))
  FILTER(STR(?kingdomA) != STR(?kingdomB))
  FILTER(STR(?kingdomA) != "incertae sedis" && STR(?kingdomB) != "incertae sedis")
}""" ;
    schema:keywords "example" ;
    schema:target <https://qlever.dev/api/gbif> .