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

### Instruction:
What is the lowest rank of an episode with a rating/share (18-49) of 1.3/4?

### Inputs:
table_name: table, columns: ['Episode Number', 'Episode', 'Rating', 'Share', 'Rating/Share (18-49)', 'Viewers (millions)', 'Rank (Timeslot)', 'Rank (Night)']

### Response:
SELECT MIN Rank (Night) FROM table WHERE Rating/Share (18-49) = 1.3/4