On 2/4/23, Darren Cook via Corpora <[email protected]> wrote:
> The query builder will make it a bit easier:
> https://query.wikidata.org/querybuilder/?uselang=en
> It will still be a bit of work, finding out the property numbers for all
> the fields you want included.
>
> (If you go down this route, and it works, maybe you can post back the
> SPARQL query you end up with.)


 I played with it for a little while and couldn't make sense of it.
The best I could do is gettting an exception which at least showed to
me what they were using:

https://query.wikidata.org/querybuilder/?uselang=en

Wikidata Query Service

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Query timeout limit reached

SPARQL-QUERY: queryStr=SELECT DISTINCT ?item ?itemLabel WHERE {
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  {
    SELECT DISTINCT ?item WHERE {
      ?item p:P50 ?statement0.
      ?statement0 (ps:P50/(wdt:P279*)) _:anyValueP50.
    }
    LIMIT 100
  }
}
java.util.concurrent.TimeoutException
        at java.util.concurrent.FutureTask.get(FutureTask.java:205)
        at 
com.bigdata.rdf.sail.webapp.BigdataServlet.submitApiTask(BigdataServlet.java:292)
        at 
com.bigdata.rdf.sail.webapp.QueryServlet.doSparqlQuery(QueryServlet.java:678)
        at com.bigdata.rdf.sail.webapp.QueryServlet.doGet(QueryServlet.java:290)
        at com.bigdata.rdf.sail.webapp.RESTServlet.doGet(RESTServlet.java:240)
        at 
com.bigdata.rdf.sail.webapp.MultiTenancyServlet.doGet(MultiTenancyServlet.java:273)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at 
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:865)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1655)
        at 
org.wikidata.query.rdf.blazegraph.throttling.ThrottlingFilter.doFilter(ThrottlingFilter.java:320)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at 
org.wikidata.query.rdf.blazegraph.throttling.SystemOverloadFilter.doFilter(SystemOverloadFilter.java:82)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at 
ch.qos.logback.classic.helpers.MDCInsertingServletFilter.doFilter(MDCInsertingServletFilter.java:49)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at 
org.wikidata.query.rdf.blazegraph.filters.QueryEventSenderFilter.doFilter(QueryEventSenderFilter.java:116)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at 
org.wikidata.query.rdf.blazegraph.filters.ClientIPFilter.doFilter(ClientIPFilter.java:43)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at 
org.wikidata.query.rdf.blazegraph.filters.JWTIdentityFilter.doFilter(JWTIdentityFilter.java:66)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at 
org.wikidata.query.rdf.blazegraph.filters.RealAgentFilter.doFilter(RealAgentFilter.java:33)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at 
org.wikidata.query.rdf.blazegraph.filters.RequestConcurrencyFilter.doFilter(RequestConcurrencyFilter.java:50)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634)
        at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
        at 
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
        at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1340)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
        at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
        at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1242)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
        at 
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220)
        at 
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at org.eclipse.jetty.server.Server.handle(Server.java:503)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
        at 
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
        at 
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
        at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
        at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
        at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
        at java.lang.Thread.run(Thread.java:750)
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