When trying to munge the dumps the process is filtering many triples saying:
15:03:28.962 [org.wikidata.query.rdf.tool.rdf.AsyncRDFHandler$RDFActionsReplayer] INFO o.wikidata.query.rdf.tool.rdf.Munger - Unrecognized statement: s:http://commons.wikimedia.org/entity/statement/M51372-16FD5B4C-7B40-4FCC-984C-4DAA9A8D00CA p:http://wikiba.se/ontology#rank o:http://wikiba.se/ontology#NormalRank 15:03:28.962 [org.wikidata.query.rdf.tool.rdf.AsyncRDFHandler$RDFActionsReplayer] INFO o.wikidata.query.rdf.tool.rdf.Munger - Unrecognized statement: s:http://commons.wikimedia.org/entity/statement/M51372-16FD5B4C-7B40-4FCC-984C-4DAA9A8D00CA p:http://www.wikidata.org/prop/statement/P7482 o:http://www.wikidata.org/entity/Q66458942 15:03:28.962 [org.wikidata.query.rdf.tool.rdf.AsyncRDFHandler$RDFActionsReplayer] INFO o.wikidata.query.rdf.tool.rdf.Munger - Unrecognized subjects: [http://commons.wikimedia.org/entity/statement/M51376-4B8D8CD4-0783-433F-B0A2-1DD667F8FBAB] while processing http://commons.wikimedia.org/entity/M51376. Expected only sitelinks and subjects starting with http://commons.wikimedia.org/wiki/Special:EntityData/ and [http://www.wikidata.org/entity/, http://commons.wikimedia.org/entity/] 15:03:28.962 [org.wikidata.query.rdf.tool.rdf.AsyncRDFHandler$RDFActionsReplayer] INFO o.wikidata.query.rdf.tool.rdf.Munger - Unrecognized statement: s:http://commons.wikimedia.org/entity/statement/M51376-4B8D8CD4-0783-433F-B0A2-1DD667F8FBAB p:http://www.w3.org/1999/02/22-rdf-syntax-ns#type o:http://wikiba.se/ontology#BestRank 15:03:28.962 [org.wikidata.query.rdf.tool.rdf.AsyncRDFHandler$RDFActionsReplayer] INFO o.wikidata.query.rdf.tool.rdf.Munger - Unrecognized statement: s:http://commons.wikimedia.org/entity/statement/M51376-4B8D8CD4-0783-433F-B0A2-1DD667F8FBAB p:http://wikiba.se/ontology#rank o:http://wikiba.se/ontology#NormalRank 15:03:28.962 [org.wikidata.query.rdf.tool.rdf.AsyncRDFHandler$RDFActionsReplayer] INFO o.wikidata.query.rdf.tool.rdf.Munger - Unrecognized statement: s:http://commons.wikimedia.org/entity/statement/M51376-4B8D8CD4-0783-433F-B0A2-1DD667F8FBAB p:http://www.wikidata.org/prop/statement/P7482 o:http://www.wikidata.org/entity/Q66458942 15:03:28.962 [org.wikidata.query.rdf.tool.rdf.AsyncRDFHandler$RDFActionsReplayer] INFO o.wikidata.query.rdf.tool.rdf.Munger - Unrecognized subjects: [http://commons.wikimedia.org/entity/statement/M51389-FE3B5391-E9F2-45E2-B353-84FD0ED8FDC8] while processing http://commons.wikimedia.org/entity/M51389. Expected only sitelinks and subjects starting with http://commons.wikimedia.org/wiki/Special:EntityData/ and [http://www.wikidata.org/entity/, http://commons.wikimedia.org/entity/]
The munger is ran with the following options: -w commons.wikimedia.org -U http://www.wikidata.org --commonsUri http://commons.wikimedia.org.