| http://www.w3.org/ns/prov#value | - For example, mobile device 402a can place and receive phone calls (for example, using voice over Internet Protocol (VoIP)), send and receive e-mail messages (for example, using Post Office Protocol 3 (POP3)), and retrieve electronic documents or streams, such as Web pages, photographs, and videos, over wireless network 412, gateway 416, and WAN 414 (for example, using Transmission Control Protocol
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