Table: best_selling_books
Columns: book_series
author
original_language
no_of_installments
first_published
approximate_sales

Question: What is every original language for book series Little House on the Prairie?
SQL: SELECT "original_language" FROM best_selling_books WHERE "book_series" = 'Little House on the Prairie'

Question: What are all approximate sales for the author Laura Ingalls Wilder?
SQL: SELECT "approximate_sales" FROM best_selling_books WHERE "author" = 'Laura Ingalls Wilder'