Question: The Het peoples live west of the Paraná River on which continent? 

Context paragraphs:
Paraná (state): Paraná (] ) is one of the 26 states of Brazil, located in the south of the country, bordered on the north by São Paulo state, on the east by the Atlantic Ocean, on the south by Santa Catarina state and the province of Misiones, Argentina, and on the west by Mato Grosso do Sul and the departments of Alto Paraná and Canindeyú in Paraguay, with the Paraná River as its western boundary line.

Paraná Delta: The Paraná Delta (Spanish: "Delta del Paraná" ) is the delta of the Paraná River in Argentina and it consists of several islands known as the Islas del Paraná.  The Paraná flows north–south and becomes an alluvial basin (a flood plain) between the Argentine provinces of Entre Ríos, Santa Fe and Buenos Aires then emptying into the Río de la Plata.

Het peoples: The Het were the people of the northern Patagonian pampas west of the Paraná River: The Chechehet, the Diuihet Didiuhet, and the Taluhet.  The easternmost Didiuhet, near modern Buenos Aires and influenced by the Guarani, were called the Querandí (see).  It is not clear if these three peoples were related linguistically or only culturally.

Paraná River: The Paraná River (Spanish: "Río Paraná" , Portuguese: "Rio Paraná" , Guarani: "Ysyry Parana" ) is a river in south Central South America, running through Brazil, Paraguay, and Argentina for some 4880 km .  It is second in length only to the Amazon River among South American rivers.  The name Paraná is an abbreviation of the phrase "para rehe onáva", which comes from the Tupi language and means "like the sea" (that is, "as big as the sea").  It merges first with the Paraguay River and then farther downstream with the Uruguay River to form the Río de la Plata and empties into the Atlantic Ocean.

Arrecifes River: The Arrecifes River (Spanish Río Arrecifes) is a river of Argentina.  It is a tributary of the Paraná River.  It flows into the Paraná Delta area and joins the Paraná de las Palmas distributary of the Paraná River.

Ibicuy Islands: The Ibicuy Islands (Spanish: "Islas del Ibicuy" ) are a maze of low-level islands in the east of the Paraná Delta, within Entre Ríos Province, Argentina.  They are located between the Paraná and Uruguay Rivers.  The islands are part of the Islas del Ibicuy Department and have scattered but important settlements, like their capital Villa Paranacito.  The principal access is by the Ibicuy River, a branch of the Paraná River.

Gualeguay River: The Gualeguay River (Spanish Río Gualeguay) is one of the major rivers of the Mesopotamic province of Entre Ríos, Argentina.  Its source is in the north of the province, in the region between the cities of Federación and San José de Feliciano, and meanders in a general south-southwestward direction across the center of the province for about 350 to , receiving a large number of tributary streams.  It passes by the cities of Villaguay, Rosario del Tala, and Gualeguay, and finally empties into the Río Paraná Ibicuy, a distributary of the Paraná River in the Paraná Delta.

Predelta National Park: The Predelta National Park (Spanish: "Parque Nacional Predelta" ) is a national park of Argentina, located in south-west of the province of Entre Ríos, 6 km south from Diamante, in the Argentine Mesopotamia, at the beginning of the Paraná River Delta.  The park was created on 13 January 1992 under the Law Nº 24.063, with an area 24.58 square kilometres to protect a sample of the Upper Delta of the Paraná, which belongs to the Paraná Delta and Islands Ecoregion.  The Predelta is the area where the sediments of the Paraná start forming islands, while the river itself splits into several major arms and many smaller watercourses.

Querandí: The Querandí were one of the Het peoples, indigenous South Americans who lived in the Pampas area of Argentina; specifically, they were the eastern Didiuhet.  The name Querandí was given by the Guaraní people, as they would consume animal fat in their daily diet.  Thus, Querandí means "men with fat".  They were also well known as the Pampas prior to the 19th Century.  Mapuche (or araucanos) called them Puelche.

Paraná Miní River: The Paraná Miní River English: Río Paraná Miní ) is an anabranch, or "secondary branch", and tributary of the Paraná River.  It is located in the provinces of Santa Fe and Chaco, Argentina.  In Chaco Province the Paraná Miní receives several relatively small tributaries, including the Tapenagá River, Palometa River, and Salado River (one of many Paraná tributaries named Salado).

Supporting paragraphs: Het peoples Paraná River
Answer: South America