Develop a Python Inbuilt functions like ORM that abstracts RDFox SPARQL interactions and provides entity-centric APIs for Knowledge Graph operations. 2. User Use Cases UC1: Retrieve an entity by ID UC2: Retrieve entities by property filter UC3: Traverse related entities UC4: Sort results UC5: Limit number of results UC6: Convert UNIX timestamps to human-readable datetime UC7: Insert new entity UC8: Update existing entity UC9: Delete an entity --- 3. SDK Method Mapping UC1 → Supplier.get_by_id(id: str) UC2 → Supplier.search().filter_by(property, operator, value).all() UC3 → supplier.related_entities(link_type) UC4 → .order_by(property_name) UC5 → .take(n) UC6 → .convert_datetime(field_name, output_format) UC7 → supplier.insert() UC8 → supplier.update_fields({...}).save() UC9 → supplier.delete() --- 4. Internal Class Design 4.1 EntityBase {code:python} class EntityBase: def get_by_id(cls, id: str): pass def search(cls): pass def related_entities(self, link_type: str): pass def convert_datetime(self, field_name: str, output_format="%d-%m-%Y"): pass def insert(self): pass def update_fields(self, updates: dict): pass def save(self): pass def delete(self): pass {code} 4.2 EntityQueryBuilder {code:python} class EntityQueryBuilder: def filter_by(self, property_name: str, operator: str, value: Any): pass def order_by(self, property_name: str): pass def take(self, n: int): pass def all(self): pass {code} --- 5. SPARQL Generation Flow Initialize SELECT query Add RDF type filter Add property filters via .filter_by() Add ORDER BY if .order_by() used Add LIMIT if .take() used Compile and execute SPARQL via RDFoxClient --- 6. Example Code Flow {code:python} suppliers = Supplier.search().filter_by("lead_time", ">", 20).order_by("lead_time").take(5).all() {code} Internal steps: Supplier.search() ➔ initializes QueryBuilder filter_by ➔ adds WHERE filter order_by ➔ adds ORDER BY clause take ➔ adds LIMIT all ➔ compiles SPARQL and fetches results --- 7. Update Operation Flow update_fields ➔ updates local cache save ➔ compiles DELETE + INSERT SPARQL RDFoxClient ➔ sends update query