@Nemo, Apper: Do you think you could import that data into the wd-repo AND make use of it via an inclusion template? In the past there was some animosity against importing data without their sources, but if it is data that is being used and displayed on Wikipedia, then I guess it would be regarded differently. Anyhow, these kinds of discussions are better on-wiki.

On Sun, Apr 27, 2014 at 11:16 AM, Christian Thiele <apper@apper.de> wrote:

The german dates have to be parsed, and I think the uncertainty for many persons is the main problem ("born 5th of July 1716 or 15th of July 1718", "between 1918 and 1921"). But of course for a lot of persons there are accurate information, which could be imported to Wikidata.

For this kinds of situation you have the "before" and "after" of the time datatype:
https://www.wikidata.org/wiki/Special:ListDatatypes

The problem is that it is not visible yet...
https://bugzilla.wikimedia.org/show_bug.cgi?id=61909

Cheers,

Micru