| http://www.w3.org/ns/prov#value | - I???m especially concerned about second-level variation ??? like having students experiment try to match an exponential decay equation ax^b with a particular set of data, you have one kind of variable with the x but also varying the parameters a and b, so you???ve got one level of scrubbing with the x but an entirely different type of scrubbing for the a and b.
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