query-a48a24a292607f36a01ae8113fa6e5ee

rq turtle/ttl

A couple of problemsI have the following query.

Use at

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX schema: <http://schema.org/>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?game ?gameLabel ?enwiki ?devLabel ?publisherLabel ?date WHERE {
    ?game wdt:P31 wd:Q7889;
    wdt:P136 wd:Q744038.
    OPTIONAL {
      ?enwiki schema:about ?game;
      schema:isPartOf <https://en.wikipedia.org/>
    }
#    OPTIONAL {
      ?game wdt:P178 ?dev.
      ?game wdt:P123 ?publisher.
      ?game wdt:P577 ?date.
#    }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
} ORDER BY ASC (?date)

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v1("?date"):::projected v4("?dev") v3("?enwiki"):::projected v2("?game"):::projected v5("?publisher") c4(["wd:Q744038"]):::iri c14(["en"]):::literal c7([https://en.wikipedia.org/]):::iri c12(["bd:serviceParam"]):::iri c2(["wd:Q7889"]):::iri v2 --"wdt:P31"--> c2 v2 --"wdt:P136"--> c4 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v3 -."schema:about".-> v2 v3 --"schema:isPartOf"--> c7 end v2 --"wdt:P178"--> v4 v2 --"wdt:P123"--> v5 v2 --"wdt:P577"--> v1 subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c12 --"wikibase:language"--> c14 end