Intelligent tagging uses natural language processing and other AI technologies to infer meaning from unstructured data. Apparently there is a free limited API for that
called open calais by Refinitiv formerly Reuters at https://developers.refinitiv.com/open-permid/intelligent-tagging-restful-api .
The API looks intimidating and an application must be made before getting a key.
A preview can be seen at https://permid.org/onecalaisViewer
Intelligent Tagging
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MtPelion
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