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:
|   Series # |   Season # | Title                       | Directed by      | Written by                         | Original air date   |   U.S. viewers (in millions) |
|-----------:|-----------:|:----------------------------|:-----------------|:-----------------------------------|:--------------------|-----------------------------:|
|         63 |          1 | "the (very) big bird job"   | john rogers      | john rogers                        | july15,2012         |                         3.39 |
|         64 |          2 | "the blue line job"         | marc roskin      | m. scott veach & paul guyot        | july22,2012         |                         2.63 |
|         65 |          3 | "the first contact job"     | jonathan frakes  | aaron denius garcia                | august5,2012        |                         2.61 |
|         66 |          4 | "the french connection job" | tawnia mckiernan | paul guyot                         | august12,2012       |                         2.32 |
|         67 |          5 | "the gimme a k street job"  | jonathan frakes  | jeremy bernstein                   | august19,2012       |                         2.39 |
|         68 |          6 | "the d.b. cooper job"       | marc roskin      | chris downey                       | august26,2012       |                         2.62 |
|         69 |          7 | "the real fake car job"     | john harrison    | josh schaer                        | september2,2012     |                         2.35 |
|         70 |          8 | "the broken wing job"       | john harrison    | m. scott veach & rebecca kirsch    | september9,2012     |                         2.19 |
|         71 |          9 | "the rundown job"           | dean devlin      | chris downey & josh schaer         | september16,2012    |                         2.63 |
|         72 |         10 | "the frame up job"          | marc roskin      | geoffrey thorne & jeremy bernstein | september16,2012    |                         2.45 |
|         73 |         11 | "the low low price job"     | tawnia mckiernan | rebecca kirsch                     | november27,2012     |                         1.91 |
|         74 |         12 | "the white rabbit job"      | pj pesce         | geoffrey thorne                    | december4,2012      |                         2.42 |
|         75 |         13 | "the corkscrew job"         | marc roskin      | jenn kao                           | december11,2012     |                         2.04 |
|         76 |         14 | "the toy job"               | jonathan frakes  | joe hortua                         | december18,2012     |                         2.23 |

Question: Who directed the episode that aired on july15,2012?

table_id: 1-20704243-6
label: SELECT "Directed by" FROM "table" WHERE "Original air date" = "July15,2012"