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_51114 ( "Rank" text, "Nation" text, "Gold" real, "Silver" real, "Bronze" real, "Total" real )

### Question ###
Name the Silver that has a Total smaller than 2, and a Nation of south korea?

### Accurate SQL ###

SELECT AVG("Silver") FROM table_51114 WHERE "Total" < '2' AND "Nation" = 'south korea'