curl -X POST https://api.aiql.io/extract \
-H "Authorization: Bearer $AIQL_API_KEY" \
-H "Content-Type: application/json" \
-d '{"markdown": "# Report\n\nLong markdown content...", "schema": {"classes": [{"name": "Person", "definition": "An individual human."}], "properties": [{"name": "name", "type": "STRING", "definition": "The person's full name.", "domain": ["Person"]}], "relationships": [{"name": "knows", "definition": "One person is acquainted with another.", "domain": ["Person"], "range": ["Person"]}]}}'