see https://www.wikidata.org/w/api.php?action=help&modules=wbgetentities
https://www.mediawiki.org/wiki/API:Presenting_Wikidata_knowledge says
<<... wbgetentities has no means to specify which properties you want, instead you request all claims about the entity ...>>
https://www.wikidata.org/wiki/Q83835 (Swiss Federal Railways - SBB) breaks getEntities() / simplify() has a huge number "owner of" (P1830) statements (a lot of railway stations).
that cause the wbgetentities to get quite slow and the response very big.
It would be very helpful to be able narrow down what is returned