CREATE TABLE table_12340 ("17th c." TEXT, "American" TEXT, "British" TEXT, "Australian" TEXT, "Examples" TEXT)

What is 17th c., when Australian is 'i, , ', and when Examples is ' sophagus'?
SELECT "17th c." FROM table_12340 WHERE "Australian" = 'i, ɪ, ə' AND "Examples" = 'œsophagus'
SELECT "17th c." FROM "table_12340" WHERE "Australian" = 'i, ɪ, ə' AND "Examples" = 'œsophagus'