CREATE TABLE table_2147 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

In what district is the incumbent John Linder?
SELECT "District" FROM table_2147 WHERE "Incumbent" = 'John Linder'
SELECT "District" FROM "table_2147" WHERE "Incumbent" = 'John Linder'