user: Question: What is the enrollment ration in primary in the region where the enrollment ratio in preschool is 50.23? 
Columns: ['Region', 'Preschool (0–5 years)', 'Primary (6–13 years)', 'Secondary (14–17 years)', 'Tertiary (18–24 years)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Arica and Parinacota', '42.92', '91.17', '76.65', '38.67']
SQL:

assistant: SELECT "Primary (6–13 years)" FROM "Table" WHERE "Preschool (0–5 years)" = '50.23';