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

### Instruction:
What's the highest season number with a series number of 47?

### Inputs:
table_name: table, columns: ['No. in Series', 'No. in Season', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (millions)']

### Response:
SELECT MAX No. in Season FROM table WHERE No. in Series = 47