README.md

Queries for CdV 2021 PM20 (20th Century Press Archives)

Normally the queries use the SPARQL endpoint at http://zbw.eu/beta/sparql/pm20/query. Queries on the Wikidata endpoint https://query.wikidata.org/sparql may link via PM20 folder ID (wdt:P4293). Federated queries involving both endpoints are supported. Alternatively, the named graph http://zbw.eu/beta/wikidata/ng holds an extract from Wikidata (labels, German Wikipedia pages, etc.) for the connected items.

All queries are restricted to the subset of folders relevant for Coding da Vinci 2021. For queries on the total of PM20, see https://github.com/zbw/sparql-queries/tree/master/pm20.

Query	Description
dummy	Template for queries (results)
count_folder_types	Count folders by type, with counts of GND and Wikidata IDs and German Wikipedia page links
search_folders_by_text	Search folders by text
companies_with_reports	Full list of companies which have business reports

Controlled vocabularies (parameterized queries)

Person folders

List	Description
nationality	Nationality
activity/about	Field of activity
activity/location	Country of activity

Organization folders

List	Description
type	Type of the organization
industry	Industry / sector
location	Location
broaderLocation	Broader location
member/roleName	Roles of organization members

Links to other datasets

Query	Description
economists	Economists with links to Wikipedia, DDB images, EconBizWorks
judaicalink_overlap	Overlap in CdV 2018 datasets by FID Jewish Studies and ZBW (JudaicaLink and PM20, via common GND)
judaicalink_via_wikidata	Overlap in CdV 2018 datasets by FID Jewish Studies and ZBW (on common GND), as given by a federated query on the Judaicalink endpoint, reaching out to the Wikidata endpoint (w/o any PM20 endpoint involved)