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_36243 ( "District" text, "Incumbent" text, "Party" text, "First elected" real, "Result" text )

### Question ###
What was the district Incumbent Julius Kahn was in that was smaller than 1906?

### Accurate SQL ###

SELECT "District" FROM table_36243 WHERE "First elected" < '1906' AND "Incumbent" = 'julius kahn'