From the presentation at the workshop about Problematic data in Stockholm 2019-08-30
Lecturer at Problematic Data Workshop 2019
CC BY-SA 4.0
From the presentation: <a class="external free" href="https://commons.wikimedia.org/wiki/Category:Problematic_Data_workshop_2019">https://commons.wikimedia.org/wiki/Category:Problematic_Data_workshop_2019</a>