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

### Instruction:
What state had william bigler (d) as a successor)

### Inputs:
table_name: table, columns: ['State (class)', 'Vacator', 'Reason for change', 'Successor', 'Date of successors formal installation']

### Response:
SELECT State (class) FROM table WHERE Successor = William Bigler (D)