@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:210_mass_spectrometry_measured_value a sh:SPARQLExecutable,
        sh:SPARQLSelectExecutable ;
    rdfs:comment "Find a protein's mass spectrometry annotation with its measured mass (up:measuredValue) and, where recorded, the measurement's error margin (up:measuredError)"@en ;
    sh:prefixes _:sparql_examples_prefixes ;
    sh:select """PREFIX up: <http://purl.uniprot.org/core/>

SELECT
  ?protein
  ?annotation
  ?measuredValue
  ?measuredError
WHERE {
  ?protein a up:Protein ;
    up:annotation ?annotation .
  ?annotation a up:Mass_Spectrometry_Annotation ;
    up:measuredValue ?measuredValue .
  OPTIONAL { ?annotation up:measuredError ?measuredError }
}""" ;
    schema:keywords "mass spectrometry" , "measurement" , "protein mass" ;
    schema:target <https://sparql.uniprot.org/sparql/> .