{"public_id":"cl_2e871545dd017f3aa7f243a053d4b530","status":"active","superseded_by_public_id":null,"corpus_id":234352974,"text":"Six schools with sustained school improvement were selected through purposive sampling for a qualitative investigation.","confidence":0.93,"paper":{"corpus_id":234352974,"title":"Instructional Leadership: Its Role in Sustaining School Improvement in South African Schools","url":"https://sah.borca.ai/papers/234352974"},"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.93,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_29b257f9e349e888d06b66839e0112b8","name":"qualitative research approach","description":"A research design that uses non-numeric data to explore meanings, experiences, and practices.","types":["research approach"],"url":"https://sah.borca.ai/concepts/co_29b257f9e349e888d06b66839e0112b8"},{"public_id":"co_ad79b0ea18aeb9008d9f4b692f25a7b1","name":"purposive sampling","description":"A non-random sampling method that selects participants or cases based on predefined criteria.","types":["sampling method"],"url":"https://sah.borca.ai/concepts/co_ad79b0ea18aeb9008d9f4b692f25a7b1"},{"public_id":"co_f6f31fefc3b18c36b882869798c57070","name":"six schools","description":"The set of six schools selected for the qualitative study.","types":["sample"],"url":"https://sah.borca.ai/concepts/co_f6f31fefc3b18c36b882869798c57070"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_2e871545dd017f3aa7f243a053d4b530"}