| http://www.w3.org/ns/prov#value | - The object of the present invention is to inform and disclose information that content has been updated for a person who can browse the content by transmission of an e-mail or the like, and also, to prevent a person, to whom the transmission of e-mail has been non-deliverable due to a reason such as retirement, from browsing the content, and thus preventing the information from unauthorized disclo
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