Nias language
The Nias language is an Austronesian language spoken on Nias Island and the Batu Islands off the west coast of Sumatra in Indonesia . 
<triplet> Nias language <subj> Austronesian language <obj> part of <triplet> Sumatra <subj> Nias language <obj> language used <subj> Indonesia <obj> country <triplet> Indonesia <subj> Nias language <obj> language used