Migrate Web documents into web data

According to Internet Users able to use the Web to carry out tasks like Searching, Retrieving and Storing the information on to the Web. However, Machines can't execute these tasks without interaction of human, because Web Pages are designed to be read only by people, not Machines'. Another view, increasing volume of heterogeneous information on the Web, there exist issues, effective retrieval of information, during searching of users' interest. A very optimal approach is the Semantic Web, it is Web Data, which permits to share, reused the data across various application, enterprise and community boundaries. Although, these relatively new and revolutionary language have many advantages, so that lack of Web administration and effective information retrieval, it is need of situation migrate most of the Web documents into web data, Semantic Web.