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

### Instruction:
How many numbers in the season were written by  Brett Conrad & Liz Sagal?

### Inputs:
table_name: table, columns: ['No. in series', 'No. in season', 'Title', 'Directedby', 'Writtenby', 'Originalairdate', 'Production code', 'U.S.viewers (million)']

### Response:
SELECT COUNT No. in season FROM table WHERE Writtenby = Brett Conrad & Liz Sagal