| http://www.w3.org/ns/prov#value | - If a shadow is no longer being cast, for example because clouds have come between the sun and the wind power installation, it is also possible to provide that the system does not switch on the wind power installation again immediately, but waits for a certain time, for example between 5 and 10 minutes, and provides for switching on the wind power installation and for causing it to run again, only
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