Andy Mabbett wrote: If you look at the Baddesley Clinton entry on Wikipaedia, ( http://en.wikipedia.org/wiki/Baddesley_Clinton) you will see that in the right hand box, Owner: National Trust. If you look at the Wikkidata entry ( https://www.wikidata.org/wiki/Q4386885) that information is not present. Conversely, look at Packwood House ( http://en.wikipedia.org/wiki/Packwood_House) and see that corresponding Wikidata page has a statement of 'Owned by the National Trust'. ( https://www.wikidata.org/wiki/Q7123054). There are many, many examples. I have escalated my emails to both Historic England and the National Trust to get their data in a useable form. Apropos of which, the WayBackWhen site is particularly interesting :-) Thanks all. My first paid computing job was to write a database system (1984) and I have been involved ever since. been a while since I played with really big data (most I have played with recently has been the Postcodes issue) but am looking forward to making even a slight improvement for Wiki. Mike _______________________________________________ Wikidata mailing list Wikidata(a)lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata