| http://www.w3.org/ns/prov#value | - If you aren???t versed in Python, the above code simply has a class Foo with a variable x and a getter, getX, and a class Bar which is a subclass of Foo, which introduces a new variable y and a getter, getY. Note that getters aren???t particularly good Python style, but in this case they just serve as examples of methods which operate on the data.
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