@prefix ex:<https://purl.expasy.org/sparql-examples/neXtProt/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <https://schema.org/> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
ex:NXQ_09002 a sh:SPARQLExecutable, sh:SPARQLSelectExecutable ;
  sh:prefixes _:sparql_examples_prefixes ;
  rdfs:comment '''Check there are no non-standard amino acid terms with no entry associated'''@en ;
  schema:keywords "QC", "selenocysteine", "vocabulary", "snorql-only" ;
  schema:target <https://sparql.nextprot.org/sparql> ;
  sh:select '''PREFIX : <http://nextprot.org/rdf/>
PREFIX cv: <http://nextprot.org/rdf/terminology/>

select distinct ?nstdaa where {
  ?nstdaa a :NonStandardAminoAcidCv .
  filter not exists {?member :isoform /:selenocysteine / :term ?nstdaa .}
}''' .