[{"source_document_id":18,"title":"Raspberries, Blackberries and Dewberries","url":"https://openprairie.sdstate.edu/cgi/viewcontent.cgi?article=1103&context=agexperimentsta_bulletins","rights_status":"unknown","evidence_claim_count":2,"relationship_count":1,"history_event_count":1,"sample_snippets":["Plant vigorous, productive, purple-caned, but sprouts freely; foliage distinct, fruit on style of Shaffer but smaller, worthy of trial where raspberries winter-kill, as it has endured 41 degrees below zero without protec","wild x Shaffer","relationship: cross_parent","history: wild x Shaffer"]}]