Question: Name the province in the north of Argentina whose neighbouring provinces include Salta, Chaco and Tucuman and is represented by the Civic Front for Santiago which operates as a bloc in Congress?

Context paragraphs:
Tren Hospital ALMA: Tren Hospital ALMA is a mobile children's hospital in Argentina.  It treats the needy in locations in the Northwest region of the country ( Santiago del Estero Province, Catamarca Province, Salta Province, Jujuy Province, Chaco Province, and Tucumán Province ).  This hospital provides medical and dental care, and health education at no cost to volunteers.  The hospital also contributes to the local teacher training on health issues.

Emilio Rached: Emilio Alberto Rached (born 2 June 1959 in Rosario, Santa Fe Province) is an Argentine politician, formerly of the Radical Civic Union.  Elected for the Civic Front for Santiago, he sits in the Argentine Senate representing Santiago del Estero Province and supports the majority block of the Front for Victory.

Salta Province: Salta (] ) is a province of Argentina, located in the northwest of the country.  Neighboring provinces are from the east clockwise Formosa, Chaco, Santiago del Estero, Tucumán and Catamarca.  It also surrounds Jujuy.  To the north it borders Bolivia and Paraguay and to the west lies Chile.

Formosa Province: Formosa Province (] ) is a province in northeastern Argentina, part of the Gran Chaco Region.  Its northeast end touches Asunción, Paraguay, and borders the provinces of Chaco and Salta to its south and west, respectively.  The capital is Formosa.

Civic Front for Santiago: The Civic Front for Santiago (Spanish: "Frente Cívico por Santiago" ) is a provincial political electoral front in Santiago del Estero Province, Argentina.  It operates as a bloc in Congress.

Los Blanquitos Formation: The Los Blanquitos Formation is a geological formation in Salta Province, Argentina whose strata date back to the Late Cretaceous.  Dinosaur remains are among the fossils that have been recovered from the formation.

Ada Itúrrez de Cappellini: Ada Rosa del Valle Itúrrez de Cappellini is an Argentine Justicialist Party politician.  Elected for the Civic Front for Santiago, she sits in the Argentine Senate representing Santiago del Estero Province and supports the majority block of the Front for Victory.

Santiago del Estero Province: Santiago del Estero (] ), also called "Santiago", is a province in the north of Argentina.  Neighbouring provinces, clockwise from the north, are Salta, Chaco, Santa Fe, Córdoba, Catamarca and Tucumán.

Vilela people: The Vilela people, or Vilelas, are an indigenous people in Argentina.  Today, their few remaining descendants live primarily in the provinces of Chaco and Santiago del Estero, with smaller numbers in the Rosario and Buenos Aires urban areas.  In the province of Chaco, the Vilelas live together with the Toba (or Qom) people in communities such as the Colonia Aborigen Chaco (Chaco Aboriginal Colony).  They also reside in rural areas and at the periphery of large cities such as Resistencia, Sáenz Peña, Machagai, and Quitilipi.  In Santiago del Estero Province, the Vilela people live in their own communities as well as in communities shared with the Lule people, with whom they are closely related and share a language family.

Claudia Ledesma Abdala: Claudia Alejandra Ledesma Abdala de Zamora (born 14 September 1974) is an Argentine politician of the Civic Front for Santiago ("Frente Cívico por Santiago"), allied to the Front for Victory.  She was elected Governor of Santiago del Estero Province in 2013, succeeding her husband, Gerardo Zamora, currently Provisional President of Argentine Senate.

Supporting paragraphs: Civic Front for Santiago Santiago del Estero Province
Answer: Santiago del Estero Province