@prefix ex: <https://sparql.uniprot.org/.well-known/sparql-examples/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <https://schema.org/> .
@prefix sh: <http://www.w3.org/ns/shacl#> .

ex:208_absorption_maximum_and_certainty a sh:SPARQLExecutable,
        sh:SPARQLSelectExecutable ;
    rdfs:comment "Find a protein's reported absorption maximum wavelength (up:maximum, in nm) together with up:certain, a qualifier flagging whether that reported value is certain or approximate"@en ;
    sh:prefixes _:sparql_examples_prefixes ;
    sh:select """PREFIX up: <http://purl.uniprot.org/core/>

SELECT
  ?protein
  ?maxWavelength
  ?certain
WHERE {
  ?protein a up:Protein ;
    up:annotation ?annotation .
  ?annotation a up:Absorption_Annotation ;
    up:maximum ?maxWavelength .
  OPTIONAL { ?annotation up:certain ?certain }
}""" ;
    schema:keywords "absorption" , "spectral" , "qualifier" ;
    schema:target <https://sparql.uniprot.org/sparql/> .