CREATE TABLE table_203_129 (id NUMBER, "finalist" CLOB, "age" NUMBER, "from" CLOB, "dress colour" CLOB, "status" CLOB)

simona armstrong is how much older than leanne dobinson ?
SELECT (SELECT "age" FROM table_203_129 WHERE "finalist" = 'simona armstrong') - (SELECT "age" FROM table_203_129 WHERE "finalist" = 'leanne dobinson')
SELECT (SELECT "age" FROM "table_203_129" WHERE "finalist" = 'simona armstrong') - (SELECT "age" FROM "table_203_129" WHERE "finalist" = 'leanne dobinson')