'Wikidata Query Service: lookup property label

How do I form the query to look up the English label of a property on a given entity.

This query provides the ID of P31:

SELECT ?item ?itemLabel ?instance_of WHERE {
  ?item wdt:P646 "/m/09c7w0".
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  OPTIONAL {
    ?item wdt:P31 ?instance_of.}
  }
}
LIMIT 1

How can I get the label of P31 instead?

Also, is there a smart way to get the "best" value of P31, possibly the one with the lowest numeric ID? Some detailed entities have very noisy values. For example, for Q30, "United States" I would prefer to see "country" as my instance_of instead of "member state of the United Nations".

sparqlwikidata-query-service


Solution 1:[1]

Thanks AKSW. label service applies to the property given a variable with the matching suffix Label:

SELECT ?item ?itemLabel ?instance_of ?instance_ofLabel WHERE {
  ?item wdt:P646 "/m/09c7w0".
  OPTIONAL {
    ?item wdt:P31 ?instance_of.
  }
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
LIMIT 1

Sources

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Source: Stack Overflow

Solution Source
Solution 1 bhan

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