[{"id":"wikidata_wwi_registry","name":"Wikidata First World War structured records","note":"Used as source metadata registry for battles and operations.","rights":"CC0","type":"structured_open_data","url":"https://www.wikidata.org/"},{"id":"ap_wwi_seed_registry","name":"AP WWI Atlas source registry","note":"Navigation and schematic seed layers.","rights":"AP research compilation","type":"curated_seed","url":"https://araratpetrosyan.com/projects/world-war-i-atlas/"}]