Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_29196086_4 (no_in_season INTEGER, original_air_date VARCHAR)
### Question:
which episode of the season aired on october20,2012
### Answer:
SELECT MAX(no_in_season) FROM table_29196086_4 WHERE original_air_date = "October20,2012"