What is the most effective semantic approach to enclosing a search zone?

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The most effective semantic approach to enclosing a search zone would be to use a polygon shape on a map to define the boundary of the area to be searched. This approach provides a clear visual representation of the search zone and allows for precise measurement and analysis of the area. Additionally, incorporating semantic location data such as landmarks, street names, and geocodes can further enhance the accuracy and specificity of the search zone.