| http://www.w3.org/ns/prov#value | - But on the other hand, there is such a thing as stating the area of a circle in the form of a square; and when we learn to regard our square as not existing on its own account, but as an expression of the circle in another form, our attention will be directed to the circle first, as the generating figure, and then to the square as a particular mode of expressing the same area.
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