Question:
Where was Benjamín Subercaseaux educated in Aug, 1912?

Context:
 Benjamín Subercaseaux attended Instituto Nacional General José Miguel Carrera from Jan, 1912 to Jan, 1914. 
 Benjamín Subercaseaux attended University of Paris from Jan, 1921 to Jan, 1921. 
 Benjamín Subercaseaux attended Colegio de los Sagrados Corazones de Santiago from Jan, 1915 to Jan, 1918. 
 Benjamín Subercaseaux attended University of Chile from Jan, 1919 to Jan, 1920.

Answer:
Instituto Nacional General José Miguel Carrera