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

### Instruction:
Name the least capacity for persons hour for 1983

### Inputs:
table_name: table, columns: ['Name or route', 'type', 'elevation groundstation', 'elevation mountainstation', 'slope length', 'capacity in persons/hour', 'construction year(s)']

### Response:
SELECT MIN capacity in persons/hour FROM table WHERE construction year(s) = 1983