http://www.w3.org/ns/prov#value | - I can choose to wash as much of my laundry by hand, work from home, use my car only when I have to go 10 miles (have to...not choose to), unplug everything that is not in use and other compromises to keep the power bill to the billing minimum, never buy what I can get free (dumpsters, people throwing things out, library) etc.
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