Question: Santa Rosa de Leales is a settlement in which most most densly populated province in Argentina?
Related documents: [0]  [DOC] Tucumán (] ) is the most densely populated, and the smallest by land area, of the provinces of Argentina. Located in the northwest of the country, the province has the capital of San Miguel de Tucumán, often shortened to Tucumán. Neighboring provinces are, clockwise from the north: Salta, Santiago del Estero and Catamarca. It is nicknamed El Jardín de la República ("The Garden of the Republic"), as it is a highly productive agricultural area. [END] 
[1]  [DOC] Santa Rosa de Leales is a settlement in Tucumán Province in northern Argentina. [END] 
Answer: 
Tucumán Province
Tucumán Province