Ahom language
The Ahom people established the Ahom kingdom and ruled parts of the Brahmaputra river valley in the present day Indian state of Assam between the 13th and the 18th centuries . 
<triplet> Brahmaputra <subj> Assam <obj> located in the administrative territorial entity <triplet> India <subj> Assam <obj> contains administrative territorial entity <triplet> Assam <subj> India <obj> country