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

### Instruction:
what's the lowest elevation with highest point being charles mound

### Inputs:
table_name: table, columns: ['State', 'Highest point', 'Highest elevation', 'Lowest point', 'Lowest elevation', 'Mean elevation']

### Response:
SELECT Lowest elevation FROM table WHERE Highest point = Charles Mound