foaf

http://xmlns.com/foaf/0.1/ link to namespace URI +1+1

http://prefix.cc/foaf/ link to namespace URI +1+1

http://www.prova.org/foaf/ link to namespace URI +1+1

http://xmlns.com/foaf/ link to namespace URI +1+1

http://purl.org/linked-data/sdmx/2009/measure# link to namespace URI +1+1

Add alternative URI
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