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_21 (name VARCHAR, floors VARCHAR, location VARCHAR, year_proposed VARCHAR)

### Question ###
What building is in ljubljana, proposed in 2010, and has 15 floors?

### Accurate SQL ###

SELECT name FROM table_name_21 WHERE location = "ljubljana" AND year_proposed = "2010" AND floors = "15"