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<http://webisa.webdatacommons.org/330657334>	<http://www.w3.org/ns/prov#value>	"We???ll use this indicator to show network or other activity. ??? I added a custom PNG icon for the Refresh button to the project, setting the UIButton type to Custom and the image to point at my refresh icon (you will need to drag your icon into your Xcode project before it will be available as a custom image)." .