Thanks! I added your example and Lydia's to the talk page here

https://www.wikidata.org/wiki/Talk:Q19798647

On Thu, Apr 23, 2015 at 12:06 PM, Thomas Douillard <thomas.douillard@gmail.com> wrote:

Don't use Q19798647 The item is just a description of the concept ! on Wikidata, there is a way to set an unknow value to a claim.

here is how to set this special value on a claim in the UI, in french : to https://commons.wikimedia.org/wiki/File:Wikidata_pas_de_valeur.png

You must click to the little blue icon on the left of the label.

2015-04-23 11:46 GMT+02:00 Jane Darnell <jane023@gmail.com>:

So the intention is to use Q19798647 as a random place holder specifically for Wikibase entities without a value, but not as a "no value" placeholder for a person? I think it is useful in the way you describe it, but I am curious how you would model the source B saying that "X had no child"

On Thu, Apr 23, 2015 at 11:37 AM, Lydia Pintscher <lydia.pintscher@wikimedia.de> wrote:

On Thu, Apr 23, 2015 at 11:33 AM, Gerard Meijssen
<gerard.meijssen@gmail.com> wrote:
> Hoi,
> Sorry for being dense.. What is wrong with there being no value ? Having a
> "no value" is imho understanding only a complication of saying nothing...
> Why not say nothing in the first place ?

It is important for cases like the following for example: Source A
says "X had a child" and source B says "X had no child".


Cheers
Lydia

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