| http://www.w3.org/ns/prov#value | - It achieves its purpose only when it provides sufficient information to followers: the path they are on, the obstacle they must overcome, the requirements they are expected to meet and the kinds of evidence which documents that they have ???wound up??? where they were supposed to.??? H. Altman, Syllabus Shares What the Teacher Wants (1989, p.1)
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