Are there some servers that have gotten out of sync? I'm trying (in various different ways) this:
curl 'https://query.wikidata.org/sparql' -d 'format=json&query=select%20%3Fitem%20%3Fgrid%20WHERE%20%7B%20%3Fitem%20wdt%3AP2427%20%3Fgrid%20.%20%20%7D' > ~/tmp/tmp
- sometimes I get 33863 results, sometimes 33864, sometimes 33909, seemingly at random... this is as of the past 2 hours or so.