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_27435931_1 (elevation_ft VARCHAR, continent VARCHAR)

### Question ###
what is the elevation of south america? 

### Accurate SQL ###

SELECT elevation_ft FROM table_27435931_1 WHERE continent = "South America"