CREATE TABLE table_203_400 (id NUMBER, "district" CLOB, "vacator" CLOB, "reason for change" CLOB, "successor" CLOB, "date successor\ seated" CLOB)

who was catherine s. long 's previous representative ?
SELECT "vacator" FROM table_203_400 WHERE "successor" = 'catherine s. long'
SELECT "vacator" FROM "table_203_400" WHERE "successor" = 'catherine s. long'