Task: NL2SQL (source dataset: WikiSQL)

Natural language to SQL, also known as NL2SQL, is the problem of generating a SQL query that can be executed on a input table, for a given natural language question.

You will be given an input table called "table" in the markdown format, as well as a question. Your task is to generate an SQL query that can be executed on the input table to answer the question.

Please ensure that the generated SQL only return relevant columns being specifically asked in the question (e.g., in SQL please don't return more than one columns in SELECT if only one column is needed to answer the given question, and similarly please refrain from using SELECT * unless the entire row is needed to answer the question).
 
When generating SQL code, please use the SQLite syntax to ensure that your SQL is executable on SQLite3. Use only columns that are present in the table, always use quotes around your column and table names (some column names have punctuation or special characters), and refer to the columns using the column-names exactly as they appear in the table, do not add or remove punctuation (underscore, slash, etc.)

No explanation, return the code only with the following markdown codeblock format : ```sql<SQL CODE>```. For example, ```sql
SELECT * FROM "table"
``` is a valid format.

Table:
|   No. in series | Title                  | Directed by     | Written by                       | Original air date   |   Production code |
|----------------:|:-----------------------|:----------------|:---------------------------------|:--------------------|------------------:|
|               1 | "pilot"                | richard correll | william bickley & michael warren | september 20, 1991  |            475049 |
|               2 | "the dance"            | richard correll | john b. collins                  | september 27, 1991  |            447004 |
|               3 | "rules of the house"   | richard correll | alan eisenstock & larry mintz    | october 4, 1991     |            447001 |
|               4 | "first anniversary"    | richard correll | julia newton                     | october 11, 1991    |            447003 |
|               5 | "frank & son"          | richard correll | howard adler & robert griffard   | october 18, 1991    |            447002 |
|               6 | "pulling together"     | john tracy      | ross brown & joe fisch           | october 25, 1991    |            447006 |
|               7 | "yo-yo's wedding"      | john tracy      | meredith siler                   | november 1, 1991    |            447005 |
|               8 | "just for kicks"       | larry mintz     | alan eisenstock                  | november 8, 1991    |            447009 |
|               9 | "into the woods"       | richard correll | ross brown                       | november 15, 1991   |            447008 |
|              10 | "mixed messages"       | james o'keefe   | seth weisbond                    | november 22, 1991   |            447010 |
|              11 | "a day in the life"    | john tracy      | howard adler & robert griffard   | november 29, 1991   |            447007 |
|              12 | "the new car"          | john tracy      | julia newton                     | december 6, 1991    |            447011 |
|              13 | "getting organized"    | john tracy      | howard adler & robert griffard   | december 13, 1991   |            447012 |
|              14 | "home alone"           | john tracy      | john b. collins                  | january 3, 1992     |            447013 |
|              15 | "drive, he said"       | richard correll | joe fisch                        | january 17, 1992    |            447014 |
|              17 | "the boys in the band" | richard correll | joe fisch                        | february 14, 1992   |            447018 |
|              18 | "school daze"          | richard correll | meredith siler                   | february 21, 1992   |            447015 |
|              19 | "country club"         | john tracy      | alan eisenstock & larry mintz    | february 28, 1992   |            447019 |
|              20 | "daddy's girl"         | richard correll | howard adler & robert griffard   | march 6, 1992       |            447017 |
|              21 | "he wanted wings"      | john tracy      | joe fisch                        | march 27, 1992      |            447021 |

Question: What is the name of the episode that aired originally on October 18, 1991?

table_id: 1-2468961-2
label: SELECT "Title" FROM "table" WHERE "Original air date" = "October 18, 1991"