La Amarga Formation
The La Amarga Formation is a geologic formation with outcrops in the Argentine provinces of Río Negro , Neuquén , and Mendoza . 
<triplet> La Amarga Formation <subj> geologic formation <obj> instance of <subj> Río Negro <obj> located in the administrative territorial entity <triplet> Argentine <subj> Río Negro <obj> contains administrative territorial entity <subj> Neuquén <obj> contains administrative territorial entity <subj> Mendoza <obj> contains administrative territorial entity <triplet> Río Negro <subj> Argentine <obj> country <triplet> Neuquén <subj> Argentine <obj> country <triplet> Mendoza <subj> Argentine <obj> country