POC of facets used on SPEAR data Syriaca.org. This is a work in progress.

facets.rq

 prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
 prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
 prefix cwrc: <http://sparql.cwrc.ca/ontologies/cwrc#>
 prefix dcterms: <http://purl.org/dc/terms/>
 prefix lawd: <http://lawd.info/ontology/>
 prefix person: <https://www.w3.org/ns/person>
 prefix skos: <http://www.w3.org/2004/02/skos/core#> 
 prefix snap: <http://data.snapdrgn.net/ontology/snap#>
 prefix syriaca: <http://syriaca.org/schema#>
 
 SELECT distinct ?key ?facet_value ?facet_label ?facet_count 
 WHERE 
    { # facets 
        { # Event Types facet
            SELECT distinct ('eventType' as ?key) (?eventValue as ?facet_value) (?eventLabel as ?facet_label) (count(distinct ?s) as ?facet_count)
            WHERE{
                    ?s rdf:type <http://syriaca.org/schema#/eventFactoid> ;
                        dcterms:subject ?eventValue.
                    FILTER CONTAINS(str(?eventValue), 'keyword').
                    ?eventValue rdfs:label ?eventLabel.
                    FILTER ( langMatches(lang(?eventLabel), 'en')).
                    {# Main query
                      SELECT DISTINCT ?s WHERE { 
                      VALUES ?event { <http://syriaca.org/keyword/anathema>}
                      ?factoid  dcterms:subject ?event;
                      rdf:type <http://syriaca.org/schema#/eventFactoid>.
                      ?factoid dcterms:subject ?person.
                      FILTER CONTAINS(str(?person), 'person').
                      ?person rdfs:label ?persName.
                      FILTER ( langMatches(lang(?persName), 'en')).
                    }}
                    } GROUP BY ?eventLabel ?eventValue   
                    ORDER BY asc(str(?eventLabel))
            }UNION
            { # sex facet
                SELECT distinct ('sex' as ?key) (?sexLabel as ?facet_value) (?sexLabel as ?facet_label) (count(distinct ?s) as ?facet_count)
                WHERE{
                    ?s syriaca:sex ?sexLabel
                    {# Main query
                    SELECT DISTINCT ?s WHERE { 
                    VALUES ?event { <http://syriaca.org/keyword/anathema>}
                    ?factoid  dcterms:subject ?event;
                    rdf:type <http://syriaca.org/schema#/eventFactoid>.?factoid dcterms:subject ?person.
                    FILTER CONTAINS(str(?person), 'person').
                    ?person rdfs:label ?persName.
                    FILTER ( langMatches(lang(?persName), 'en')).
                    }}
                    } GROUP BY ?sexLabel
                    ORDER BY asc(str(?sexLabel))
            }
     }