Hello Fabrizio, 

It seems that the problem comes from SERVICE wikibase:label. As said in another discussion, the query executes in less than one second if you rewrite it in this way.

Cheers,

Ettore Rizza

Le ven. 14 déc. 2018 à 09:59, Fabrizio Carrai <fabrizio.carrai@gmail.com> a écrit :

Hello all,

the following query ends with a timeot:

SELECT ?istanza_di ?istanza_diLabel WHERE {

  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }

  ?istanza_di wdt:P31 wd:Q13442814.

}

LIMIT 10

Can anybody explain why ?

Thanks in advance

--

Fabrizio

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