@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_09407 a sh:SPARQLExecutable, sh:SPARQLSelectExecutable ;
  sh:prefixes _:sparql_examples_prefixes ;
  rdfs:comment '''Check there are no entries with peptide mapping annotations with peptides of length 6 aa or less'''@en ;
  schema:keywords "QC", "mass spectrometry", "peptide", "proteomics" ;
  schema:target <https://sparql.nextprot.org/sparql> ;
  sh:select '''PREFIX : <http://nextprot.org/rdf/>
PREFIX cv: <http://nextprot.org/rdf/terminology/>

select distinct ?entry where {
  ?entry :isoform / :peptideMapping /:position ?pmpos .
  ?pmpos :start ?start; :end ?end .
  filter((?end - ?start + 1) <= 6 )
}''' .