user: Question: How many calibers require the type LB/RN?
Columns: ['Class', 'Weapon', 'Caliber', 'Type', 'Weight (g)', 'Range (m)', 'Velocity (m/s)', 'Impact Energy', 'Shots']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['BR1', 'Handgun/Rifle', '.22 LR', 'LB/RN', '2,6 ± 0,1', '10,00 ± 0,5', '360 ± 10', '170 J', 3.0]
SQL:

assistant: SELECT COUNT("Caliber") FROM "Table" WHERE "Type" = 'LB/RN';