Given the task definition and input, reply with output. In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

The Western Dakota are also called the Yankton or Yanktonai , and are located in the Missouri River area .

The Western Dakota are the Yankton , and the Yanktonai ( " Iha ́ ŋkth ̌ uŋwaŋ " and " Iha ́ ŋkth ̌ uŋwaŋna " ; " Village-at-the-end " and " Little village-at-the-end " ) , who reside in the Upper Missouri River area .