Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Which class to 1928 value had years of manufacture of 1921/23 and class from 1928 of BCi-21?

### Inputs:
table_name: table, columns: ['Class to 1928', 'Class from 1928', 'Seats', 'Quantity', 'Year(s) of Manufacture', 'Remarks']

### Response:
SELECT Class to 1928 FROM table WHERE Year(s) of Manufacture = 1921/23 AND Class from 1928 = bci-21