The ultimate goal of semantic web is evolving the existing WWW into a new frontier where agent has the ability to directly consume information without human intervention on the Web. We propose the semantic web pyramid to explain why semantic web is so important on playing a pivoting role to other emerging core technologies, such as agent, grid (p2p), ubiquitous computing, and web services. Even trust was declared as the top of layer on the semantic web layer cake. Certainly, it will not be the last and least thing for us to consider while developing the semantic web. The trusted semantic web on a pyramid where all of emerging core technologies converge to web services cornerstone. There are several possible relations on the base of semantic web pyramid, such as semantic web vs. agent, semantic web vs. web services, agent vs. web services, etc. Of course, trust (or security) might shed some light on semantic web, agent, web services, etc.