When we humans consume content such as web pages, documents or articles we gather a whole lot of information from the context of the document, e.g. where was this published, by whom, how is it designed and so on. From this we can collect a lot of information about the information of the medium we are consuming. Machines (generally / ehem llms...) did not have the ability to do that.
Semantic Web is the idea to make the web more readable for machines by enhancing web content with metadata that makes it easier for machines to consume and navigate web content.
