There is one place where the official language is niu this is work in progress See all the places where people speak niu or just all the official languages in Who's On First 

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{'query': {'filtered': {'filter': {'term': {'wof:lang_x_official': u'niu'}},
                        'query': {'match_all': {}}}}}
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  1. 85681315 Niue — this is a region in Niue
    • this record has been both deprecated and superseded
    • it was last modified on September 10, 2018
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