Semantic Web challenges and new requirements

After the introduction of semantic Web concept in 2001 by Tim Berners-Lee there have been lots of efforts and researches to realize the semantic Web goals. According to initial vision and strategy statements, semantic Web will play the role of a complement for the current Web which is mostly understandable by human users. Semantic Web researchers intend to overcome this limitation and extend the recognition of Web information to machines. Semantic Web affords to present information of World Wide Web, databases and other structured repositories in a uniform composition which is useable by other applications. In this article a short review of the semantic Web status would be presented and the future work and extension points would be discussed.