{
  "scene_id": "submitted_public_plaza_001",
  "labels": [
    {
      "id": "ground_stone_pavement",
      "type": "ground",
      "semantic_class": "walkable_surface",
      "robot_relevance": "navigation",
      "observed_from_video": true,
      "properties": {
        "walkable": true,
        "surface": "stone_pavement",
        "risk": "uneven_or_wet_surface_possible",
        "collision": false
      }
    },
    {
      "id": "historic_gate_structure",
      "type": "building_structure",
      "semantic_class": "static_obstacle",
      "robot_relevance": "localization_landmark_and_collision_boundary",
      "observed_from_video": true,
      "properties": {
        "walkable": false,
        "collision": true,
        "landmark": true
      }
    },
    {
      "id": "archway_passage",
      "type": "passage",
      "semantic_class": "possible_route",
      "robot_relevance": "navigation_goal_or_transition_area",
      "observed_from_video": true,
      "properties": {
        "walkable": "needs_validation",
        "crowd_density": "medium_to_high",
        "narrowing": true
      }
    },
    {
      "id": "pedestrian_crowd",
      "type": "people",
      "semantic_class": "dynamic_obstacle",
      "robot_relevance": "crowd_avoidance",
      "observed_from_video": true,
      "properties": {
        "walkable": false,
        "collision": true,
        "dynamic": true,
        "planner_cost": "high"
      }
    },
    {
      "id": "bollard_line",
      "type": "bollards",
      "semantic_class": "static_obstacle_boundary",
      "robot_relevance": "path_boundary_detection",
      "observed_from_video": true,
      "properties": {
        "walkable": false,
        "collision": true,
        "height": "low"
      }
    },
    {
      "id": "street_lamp_poles",
      "type": "street_lamps",
      "semantic_class": "thin_static_obstacle",
      "robot_relevance": "collision_and_mapping",
      "observed_from_video": true,
      "properties": {
        "walkable": false,
        "collision": true,
        "thin_structure": true
      }
    },
    {
      "id": "signage_boards",
      "type": "signage",
      "semantic_class": "static_obstacle_or_landmark",
      "robot_relevance": "visual_landmark_and_collision",
      "observed_from_video": true,
      "properties": {
        "walkable": false,
        "collision": true,
        "landmark": true
      }
    },
    {
      "id": "road_vehicle_zone",
      "type": "roadside_vehicle_area",
      "semantic_class": "restricted_zone",
      "robot_relevance": "safety_planning",
      "observed_from_video": true,
      "properties": {
        "walkable": false,
        "collision": false,
        "planner_cost": "very_high"
      }
    }
  ]
}