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_80216 ( "Rank" real, "Heat" real, "Lane" real, "Name" text, "Nationality" text, "Time" text )

### Question ###
Name the least lane for kasey giteau and rank less than 18

### Accurate SQL ###

SELECT MIN("Lane") FROM table_80216 WHERE "Name" = 'kasey giteau' AND "Rank" < '18'