This is the Wikidata summary of the week before 2020-05-04.

• New request for comments:A meta item namespace (Mxxx) for structured data about Wikidata

• Competition for the International Museum Day is about improving data about museums in Austria, France, Germany, Italy and Switzerland on Wikidata, from 3 May 2020 to 18 May 2020, more information onMuseum Day 2020/Wikidata Competition
• Upcoming: Next Linked Data for Libraries LD4 Wikidata Affinity Group call: Alex Jung on Wikidata and Wikipedia Infoboxes, 05 May.Agenda
• Upcoming:live SPARQL queries in French by Vigneron, Tuesday May 5 at 20:00 CEST (UTC+2)

• Wikipedia Weekly Network - LIVE Wikidata editing:YouTube
• Art+Feminism Office Hours: Introduction to Editing Wikidata:YouTube
• Webinar on why and how to contribute to Wikipedia and Wikidata? (in French):YouTube

• ProWD explores completeness for entities and classes.

• MachtSinn, a tool that allows you to easily add Senses to Lexemes, has lately been improved significantly
• 33,000 values ofBritish Museum person or institution ID(P1711) now have a useful target again. After their being mostly inoperative for several years, the new British Museum website now has information pages matching these values, with links to related objects. (Example). To work around bugT112081, a script by Andrew Gray is going through the items making null edits to update the relevant URLs.
• Outdated copy of wb_terms has been dropped on April 29th

• Newestproperties:
  • General datatypes: none
  • External identifiers:COVIDWHO ID,Sicilian Regional Assembly ID,Sicilian Regional Assembly numeric ID,Accademia delle Scienze di Torino ID,Republic of Korea Parliamentarian Society ID,NKAA ID,MémorialGenWeb monument ID,History Colorado ID,SciProfiles ID,Bibliotheca Augustana author ID,CONI honoured ID,DGHS facility code,Diels-Kranz ID,DPVweb ID,Maryland's National Register Properties ID,Encyclopaedia Metallum label ID,WhatDoTheyKnow organisation ID,FactGrid item ID,Heritage Gateway ID,RPPS ID,Priset of Archidiecezja Gdańska ID,Sejm-Wielki.pl profile ID,Extratime.ie player ID,Slovak Registration ID,Infames Romani ID,Itch.io developer profile,Oregon Historic Sites Database ID
• Newproperty proposals to review:
  • General datatypes:Ex-libris,tabular case data,Geneanet URL(s),transitivity,Compatible with
  • External identifiers:DPE school code,identifiant Prix de Lausanne,CDAPNC author ID,identificativo Giunta regionale della Sicilia,Goodreads work ID,Wikilengua,BeWeb cultural institution ID,Anagrafe Istituti Culturali Ecclesiastici ID,Group Properties wiki ID,House Divided ID,Southwest Harbor Public Library item,Gitabitan.net ID,The Conversation author ID
• Query examples:
  • Map of countries receiving the Nobel peace prize (Source)
  • Map of geolocated Argentine libraries (Source)
  • Recipes that include garlic (Source)
  • Images of postcards from the catalog of the Regional bibliography of Saxony (Source)
  • French municipalities which have the property "archived by" (P485) for the departmental archives of Bouches-du-Rhône (Source)
  • Municipalities with less than 5,000 inhabitants in the Basque Country (Source)
  • People born in Wales who became head of government in Wales or overseas (Source)
  • Average stardate of Star Trek episodes (Source)
  • Municipalities in mainland France with more than 50,000 inhabitants (Source)
  • Graph showing direct ancestral lines linking Boris Johnson and George I, and Jesus and Abraham (Source)
  • Photos by Carlton Watkins with their collection (Source)
  • Works from Louvre Museum whose inventory number begins with an S (Source)
  • Works from the Islamic arts department of Louvre Museum (Source)
  • Map of artists with place of their birth on Wikidata (Source)
  • Location and image of the cathedrals of Paris (Source)
  • Jewish art collectors and dealers who were murdered in Nazi concentration camps (Source)
• Newest database reports:Notable descedents ofMayflower passengers

• Add monolingual language codes rm-rumgr, rm-surmiran, rm-sursilv, rm-sutsilv, rm-vallader, rm-puter (phab:T222426)
• More work on the test system for federated properties
• More work on displaying statements with federated properties (phab:T246606)
• Bridge: more work on generic error screens (phab:T241126)
• Bridge: warn the user that they are about to edit anonymously (phab:T246676)
• Work on a Wikidata distributed game for automated finding of references
• Automated finding references: build a scraper, simple value matching, item analyzer
• Have the focus on field when adding new element on Sense (phab:T203461)
• Add more properties to the PageImages list (phab:T249811)
• Use strict types everywhere in Wikibase (phab:T251382)

You can see all open tickets related to Wikidata here. If you want to help, you can also have a look atthe tasks needing a volunteer.

• Add labels, in your own language(s), for the new properties listed above.
• Comment on property proposals:all open proposals
• Contribute to aShowcase item.
• Helptranslate or proofread the interface and documentation pages, in your own language!
• Help merge identical items across Wikimedia projects.
• Helpwrite the next summary!

• Wikidata status updates