SPARQL query to match monogram relationships in Nomisma

monogram-link.sparql

PREFIX crm:  <http://www.cidoc-crm.org/cidoc-crm/>
PREFIX dcterms:  <http://purl.org/dc/terms/>
PREFIX dcmitype:  <http://purl.org/dc/dcmitype/>
PREFIX foaf:  <http://xmlns.com/foaf/0.1/>
PREFIX geo:  <http://www.w3.org/2003/01/geo/wgs84_pos#>
PREFIX nm:  <http://nomisma.org/id/>
PREFIX nmo:  <http://nomisma.org/ontology#>
PREFIX org:  <http://www.w3.org/ns/org#>
PREFIX rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs:  <http://www.w3.org/2000/01/rdf-schema#>
PREFIX skos:  <http://www.w3.org/2004/02/skos/core#>
PREFIX xsd:  <http://www.w3.org/2001/XMLSchema#>

SELECT ?symbol ?symbolLabel ?altSymbol ?altSymbolLabel ?image ?altImage (count(?altSymbol) as ?count) WHERE {
  BIND (<http://nomisma.org/symbol/monogram.01830> as ?symbol)
  {?side nmo:hasControlmark ?symbol}
  UNION {?side nmo:hasControlmark ?match .
         ?match ^skos:exactMatch ?symbol}
  ?type nmo:hasObverse|nmo:hasReverse ?side .
  {?side nmo:hasControlmark ?altSymbol}
  UNION {?side nmo:hasControlmark ?altMatch .
  ?altMatch ^skos:exactMatch ?altSymbol }
            FILTER (?altSymbol != ?symbol && contains(str(?altSymbol), "http://nomisma.org/symbol"))  
  ?symbol skos:prefLabel ?symbolLabel .
  ?symbol crm:P165i_is_incorporated_in ?image .
  ?altSymbol skos:prefLabel ?altSymbolLabel .
  ?altSymbol crm:P165i_is_incorporated_in ?altImage .
} GROUP BY ?symbol ?symbolLabel ?altSymbol ?altSymbolLabel ?image ?altImage