{"L1_core": {"type": "temporal_marker", "domain": "specification", "category": "year"}, "L3_technical": {"year": 2027, "industry_context": ["energy_efficiency_targets", "led_adoption", "product_lifecycle"]}, "L2_specification": {"type": "year", "value": 2027, "context": ["planning", "roadmap", "projection"], "purpose": "product_timeline"}}