Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_42 (points INTEGER, artist VARCHAR, place VARCHAR)

### Question ###
What is the average Points when the artist is kamil mikulčík and nela, and the Place is larger than 18?

### Accurate SQL ###

SELECT AVG(points) FROM table_name_42 WHERE artist = "kamil mikulčík and nela" AND place > 18