Dataset Open Access

WarSampo Knowledge Graph

Koho, Mikko; Heino, Erkki; Leskinen, Petri; Ikkala, Esko; Tamper, Minna; Apajalahti, Kasper; Tuominen, Jouni; Mäkelä, Eetu; Hyvönen, Eero

WarSampo Knowledge Graph includes harmonized data of different kinds concerning the Second World War in Finland, separated in different subgraphs representing events, actors, places, photographs, and other aspects and documentation of the war. The data covers the Winter War 1939-1940 against the Soviet attack, the Continuation War 1941-1944 where the occupied areas of the Winter War were temporarily regained, and the Lapland War 1944-1945, where the Finns pushed the German troops away from Lapland.

To test and demonstrate its usefulness, this Knowledge Graph is in use in the semantic portal WarSampo, explained in more detail in the project page.

Example SPARQL queries for the data:

WarSampo knowledge graph version history:

  • 1.0.0, November 2015: Initial public release
  • 1.1.0, November 2017: War cemeteries addition
  • 2.0.0, May 2018: Backwards-incompatible URI changes
  • 2.0.1, November 2019: Updated schema and VoiD descriptions
  • 2.1.0, November 2019: Prisoners of war addition

Version 2.1.0 contains 14,322,426 triples.

To combine the files into a single Turtle file on a Linux system:

find . -mindepth 2 -name "*.ttl" | xargs cat >> warsampo.ttl


Files (51.5 MB)
Name Size
51.5 MB Download
All versions This version
Views 711455
Downloads 65177
Data volume 32.0 GB4.0 GB
Unique views 589415
Unique downloads 57168


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