@prefix ex: <https://sparql.swisslipids.org/.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:7 a sh:SPARQLExecutable,
        sh:SPARQLSelectExecutable ;
    rdfs:label "Enzymes for lipid analytes"@en ;
    rdfs:comment """For a given list of lipid Species, return a list of the corresponding Isomeric subspecies for that particular lipid that are linked to an enzyme as annotated in UniProtKB (UniProt AC and recommended name).
This question would allow a user with (a list of) very high level MS identifications to immediately narrow them to the most likely potential lipid structures and protein targets as in this example: SWISSLIPID:000056871 / PC(O-36:4) (target species of interest) -> SWISSLIPID:000028143 / PC(O-16:0/20:4(5Z,8Z,11Z,14Z)) -> LPCAT4, PLA2G4A, PLA2G4C, PLA2G4F (target proteins)"""@en ;
    sh:prefixes _:sparql_examples_prefixes ;
    sh:select """PREFIX SWISSLIPID: <https://swisslipids.org/rdf/SLM_>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX rh: <http://rdf.rhea-db.org/>
PREFIX up: <http://purl.uniprot.org/core/>

# Example 7
SELECT ?startId ?startLabel ?id ?name 
WHERE {
  # Queried lipid species
  VALUES ?startId { SWISSLIPID:000056871 }
  ?startId rdfs:label ?startLabel . 
  # Corresponding Isomeric subspecies
  ?id rdfs:subClassOf+ ?startId .  
  ?id SWISSLIPID:rank SWISSLIPID:Isomeric_Subspecies ;
	  rdfs:label ?name .
  # Mapped ChEBI
  ?id owl:equivalentClass ?chebi .  
  # federated query to Rhea
  SERVICE <https://sparql.rhea-db.org/sparql> {
  	?rhea rh:equation ?rheaEquation .
  	?rhea rh:side/rh:contains/rh:compound/rh:chebi ?chebi .
  }    
  # federated query to UniProt
  SERVICE <https://sparql.uniprot.org/sparql> {
    ?uniprot up:reviewed true .
    ?uniprot up:recommendedName/up:fullName ?uniprotName .
    ?uniprot up:annotation/up:catalyticActivity/up:catalyzedReaction ?rhea .
  }
}""" ;
    schema:target <https://sparql.swisslipids.org/sparql/> ;
    spex:federatesWith <https://sparql.uniprot.org/sparql> , <https://sparql.rhea-db.org/sparql> .