How to get list of USA states from Wikidata by API?

Question

I tried to find the states of USA with Wikidata API but there is no results.

For example: http://wdq.wmflabs.org/api?q=claim[150:30]

• P150 - contains administrative territorial entity
• Q30 - United States of America

What am I doing wrong?

Answer 1

You need all Wikidata items which have P31 with value Q35657: claim[31:35657]

• P31 - instance of
• Q35657 - state of the United States

Answer 2

With SPARQL, you can do that

SELECT ?state ?stateLabel
WHERE { 
   ?state wdt:P31 wd:Q35657.
   SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}

try it here