user: Question: how many episodes originally aired January19,2013
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original Air date']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [41.0, 1.0, '"Grampires"(Part 1)', 'Neill Fearnley', 'Erik Patterson & Jessica Scott', 'October13,2012']
SQL:

assistant: SELECT COUNT("No. in series") FROM "Table" WHERE "Original Air date" = 'January19,2013';