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:
| Outcome   | Date               | Championship                   | Surface    | Opponent            | Score                             |
|:----------|:-------------------|:-------------------------------|:-----------|:--------------------|:----------------------------------|
| winner    | october 8, 2001    | lyon , france                  | carpet (i) | younes el aynaoui   | 6–3, 6–2                          |
| runner-up | january 12, 2004   | doha , qatar                   | hard       | nicolas escudé      | 3–6, 6–7 (4–7)                    |
| runner-up | january 10, 2005   | doha , qatar (2)               | hard       | roger federer       | 3–6, 6–7 (4–7)                    |
| runner-up | february 14, 2005  | marseille , france             | hard (i)   | joachim johansson   | 5–7, 4–6                          |
| runner-up | february 21, 2005  | rotterdam , netherlands        | hard (i)   | roger federer       | 7–5, 5–7, 6–7 (5–7)               |
| runner-up | february 28, 2005  | dubai , uae                    | hard       | roger federer       | 1–6, 7–6 (8–6) , 3–6              |
| winner    | october 9, 2005    | metz , france                  | hard (i)   | gaël monfils        | 7–6 (9–7) , 6–0                   |
| winner    | october 16, 2005   | vienna , austria               | hard (i)   | juan carlos ferrero | 6–2, 6–4, 7–6 (7–5)               |
| runner-up | october 24, 2005   | madrid , spain                 | hard (i)   | rafael nadal        | 6–3, 6–2, 3–6, 4–6, 6–7 (3–7)     |
| runner-up | november 7, 2005   | paris , france                 | carpet (i) | tomáš berdych       | 3–6, 4–6, 6–3, 6–4, 4–6           |
| winner    | january 8, 2006    | chennai , india                | hard       | carlos moyà         | 7–6 (8–6) , 6–2                   |
| winner    | february 5, 2006   | zagreb , croatia               | carpet (i) | stefan koubek       | 6–3, 6–4                          |
| runner-up | april 3, 2006      | miami , usa                    | hard       | roger federer       | 6–7 (5–7) , 6–7 (4–7) , 6–7 (6–8) |
| runner-up | october 2, 2006    | bangkok , thailand             | hard (i)   | james blake         | 3–6, 1–6                          |
| winner    | october 15, 2006   | vienna , austria               | hard (i)   | fernando gonzález   | 6–3, 6–4, 7–5                     |
| winner    | january 6, 2007    | doha , qatar                   | hard       | andy murray         | 6–4, 6–4                          |
| runner-up | february 5, 2007   | zagreb , croatia               | carpet (i) | marcos baghdatis    | 6–7 (4–7) , 6–4, 4–6              |
| runner-up | february 26, 2007  | rotterdam , netherlands        | hard (i)   | mikhail youzhny     | 2–6, 4–6                          |
| winner    | june 17, 2007      | 's-hertogenbosch , netherlands | grass      | peter wessels       | 7–6 (7–5) , 4–6, 7–6 (7–4)        |
| runner-up | march 1, 2008      | zagreb , croatia               | hard (i)   | sergiy stakhovsky   | 5–7, 4–6                          |
| winner    | november 1, 2009   | lyon , france                  | hard (i)   | michaël llodra      | 7–5, 6–3                          |
| winner    | march 21, 2010     | indian wells , usa             | hard       | andy roddick        | 7–6 (7–3) , 7–6 (7–5)             |
| runner-up | october 31, 2010   | montpellier , france           | hard (i)   | gaël monfils        | 2–6, 7–5, 1–6                     |
| runner-up | september 25, 2011 | metz , france                  | hard (i)   | jo-wilfried tsonga  | 3–6, 7–6 (7–4) , 3–6              |

Question: What was the score of the match against roger federer on April 3, 2006?

table_id: 2-1547532-4
label: SELECT "Score" FROM "table" WHERE "Opponent" = "roger federer" AND "Date" = "april 3, 2006"