On repeatedly re-running this SPARQL query on query.wikidata.org, I'm seeing inconsistent results between runs which aren't due to changes to the items being returned:
For example, sometimes, when trying over the last hour:
- It returns 1445 results, including the person wd:Q21747014
- It returns 1441 results, not including the person wd:Q21747014
This is rather worrying, since it seems like we can't trust the results from the query service at the moment, and it creates the risk that a tool we're developing won't realise that certain statements already in Wikidata and adds a duplicate.
Is this a known problem, and is there any workaround?
Many thanks for any advice...