[{"source_document_id":3,"title":"Edible Apples in Prairie Canada","url":"https://research-groups.usask.ca/fruit/documents/apples/Edible-Apples-in-Prairie-Canada1.pdf","rights_status":"unknown","evidence_claim_count":7,"relationship_count":0,"history_event_count":0,"sample_snippets":["References cited: PSM (Shown at the 1901 Provincial Show, Morden MB.).","Hardiness rated borderline hardy (H3).","Listed as a crabapple (crabapple or applecrab, fruit less than 5 cm diameter).","H3 indicates borderline hardiness."]},{"source_document_id":2,"title":"South Dakota Fruit Garden (visual sample pages 9-11)","url":"file:///usr/local/var/www/pomologica/data/raw/manual/benchmarks/sd_fruit_garden_1943_pages_10_12.pdf","rights_status":"public_domain","evidence_claim_count":4,"relationship_count":0,"history_event_count":0,"sample_snippets":["ZONE I Southern Border, Lincoln Co., West & lower Valleys around Black Hills","PLUMS, Minn. Hybrids","For Trial","{\"column_label\": \"ZONE I Southern Border, Lincoln Co., West & lower Valleys around Black Hills\", \"cultivar_name\": \"Tonka\", \"notes\": [], \"page_number\": 1, \"parser_mode\": \"visual_table_page\", \"row_context\": null, \"row_labe"]},{"source_document_id":112,"title":"Pollination Studies with Stone Fruits","url":"https://sherwoods-forests.com/Downloads/UMinnAgExpStation-Stone_Fruit-Pollenation.pdf","rights_status":"unknown","evidence_claim_count":2,"relationship_count":0,"history_event_count":0,"sample_snippets":["Tonka ranked with the native species in viability, but proved to be a very poor pollinizer.","Listed in Table 2 as P. salicina x P. americana."]}]