| http://www.w3.org/ns/prov#value | - (It doesn???t require people stealing other peoples food to reduce food productivity ??? what can happen during war is deliberate destruction of farmland; the potato (growing underground) is harder to destroy, so growing potatos would give an adantage to people ??? potatos might also have been easier to grow than other crops in some climate conditions; however, some in Europe, such as in France, d
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