Caxias do Sul
Caxias do Sul is a city in Rio Grande do Sul , Southern Brazil , situated in the state's mountainous Serra Gaúcha region . 
<triplet> Caxias do Sul <subj> Rio Grande do Sul <obj> located in the administrative territorial entity <triplet> Rio Grande do Sul <subj> Caxias do Sul <obj> contains administrative territorial entity <subj> Southern Brazil <obj> part of