What is the vision about Semantic Web an extension of the existing World Wide Web ? with example 

The Semantic Web is the vision about an extension of the existing World Wide Web which provides software programs with machine-interpretable metadata of published information as well as data. 

The Semantic Web would essentially add further data descriptors to otherwise existing content and data on the web, and as a result, computers would be able to make meaningful interpretations, similar to the way we as humans process information in order to achieve our goals.

The ambition of the Semantic Web is to enable computers to manipulate information on our behalf.

The Semantic Web idea was created by Tim Berners-Lee, who explains that the word "schematic" indicates machine-processability or what a machine is able to do with the data.

As such, the Semantic Web can be seen as a knowledge graph formed by combining connected, linked data with intelligent content in order to facilitate machine understanding as well as the processing of content, metadata as well as other information objects at scale.

The Semantic Web will lead to smarter, effortless customer experiences by giving the content the ability to understand as well as present itself in the most useful forms which are matched to a customer's specific needs.

 Semantic Web standards have the potential to unlock a crucial evolution in regards to the web towards intelligence which will allow the content we post online to be presented in a way that can be understood, connected and combined by machines.