{"L1_core": {"type": "sfutp", "domain": "networking", "category": "cable", "subcategory": "shielding_type"}, "L4_features": ["double_overall_shield", "foil_plus_braid", "no_individual_shielding", "moderate_flexibility"], "L3_standards": ["ISO/IEC 11801", "TIA/EIA-568"], "L2_performance": {"shielding": "overall_foil_plus_braid", "impedance_ohms": 100}}