Complex sentence: Rita Blanca National Grassland is a National Grassland on the Great Plains near the community of Texline in northwest Dallam County, Texas, in the Texas Panhandle, and in southern Cimarron County, Oklahoma, in the western Oklahoma Panhandle.
Split into simpler sentences: Rita Blanca National Grassland is a National Grassland on the Great Plains. It is located near the community of Texline in northwest Dallam County, Texas, in the Texas Panhandle, and in southern Cimarron County, Oklahoma, in the western Oklahoma Panhandle.