Task: NL2SQL (source dataset: Spider)

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.

Database:
art_1

Tables:

Table: Artists
|   artistID | lname    | fname   |   birthYear |   deathYear |
|-----------:|:---------|:--------|------------:|------------:|
|        111 | Seurat   | Georges |        1859 |        1891 |
|        222 | Picasso  | Pablo   |        1881 |        1973 |
|        333 | van Gogh | Vincent |        1853 |        1890 |
|        444 | Cassatt  | Mary    |        1844 |        1926 |
|        555 | Degas    | Edgar   |        1834 |        1917 |


Table: Paintings
|   paintingID | title                                                               |   year |   height_mm |   width_mm | medium       | mediumOn         | location                                   |   painterID |
|-------------:|:--------------------------------------------------------------------|-------:|------------:|-----------:|:-------------|:-----------------|:-------------------------------------------|------------:|
|           80 | A Sunday on La Grande Jatte                                         |   1884 |        2076 |       3080 | oil          | canvas           | Gallery 240                                |         111 |
|           81 | Final Study for "Bathers at Asnieres"                               |   1883 |         159 |        251 | oil          | panel            | Gallery 240                                |         111 |
|           82 | Tree Trunks (study for La Grande Jatte)                             |   1884 |         474 |        615 | conte crayon | ivory laid paper |                                            |         111 |
|           83 | Abstraction: Background with Blue Cloudy Sky                        |   1930 |         660 |        492 | oil          | panel            | Rice Building Special Exhibition Galleries |         222 |
|           84 | Head of Young Girl                                                  |   1945 |         271 |        210 | lithograph   | ivory wove paper |                                            |         222 |
|           85 | Still Life                                                          |   1922 |         816 |       1006 | oil          | canvas           | Rice Building Special Exhibition Galleries |         222 |
|           86 | A Peasant Woman Digging in Front of Her Cottage                     |   1885 |         313 |        419 | oil          | canvas           | Gallery 241                                |         333 |
|           87 | The Bedroom                                                         |   1889 |         313 |        419 | oil          | canvas           | Gallery 241                                |         333 |
|           88 | The Drinkers                                                        |   1890 |         568 |        733 | oil          | canvas           | Gallery 241                                |         333 |
|           89 | Terrace and Observation Deck at the Moulin de Blute-Fin, Montmartre |   1887 |         435 |        330 | oil          | canvas           | Gallery 241                                |         333 |


Table: Sculptures
|   sculptureID | title         |   year | medium   | location    |   sculptorID |
|--------------:|:--------------|-------:|:---------|:------------|-------------:|
|            20 | Female Figure |   1945 | bronze   |             |          222 |
|            21 | Arabesque     |   1885 | bronze   | Gallery 226 |          555 |
|            22 | Spanish Dance |   1883 | bronze   | Gallery 226 |          555 |
|            23 | The Tub       |   1889 | bronze   | Gallery 226 |          555 |


Question: What are the first and last names of artists who have painted using both oil and lithographic mediums?

db_id: art_1
tables: name: Artists
data: Artists.csv
name: Paintings
data: Paintings.csv
name: Sculptures
data: Sculptures.csv
label: SELECT T1.lname ,  T1.fname FROM artists AS T1 JOIN paintings AS T2 ON T1.artistID  =  T2.painterID WHERE T2.medium  =  "oil" INTERSECT SELECT T3.lname ,  T3.fname FROM artists AS T3 JOIN paintings AS T4 ON T3.artistID  =  T4.painterID WHERE T4.medium  =  "lithograph"
sqlite_path: $MMTU_HOME/data_sqlite/spider/spider_data/test_database/art_1/art_1.sqlite