user: Question: What is the number range for the T 3 class?
Columns: ['Class', 'Number range', 'Quantity', 'Year(s) Built', 'Type']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['T 0 ( de )', '6001–6040', 10.0, '1880, 1883', '1A n2t 1A n2vt']
SQL:

assistant: SELECT "Number range" FROM "Table" WHERE "Class" = 'T 3';