SCHEMA:
CREATE TABLE table_name_25 (australian VARCHAR, examples VARCHAR)
USER:
What is 17th c., when Australian is "i, ɪ, ə", and when Examples is "œsophagus"?

QUERY:
SELECT 17 AS th_c FROM table_name_25 WHERE australian = "i, ɪ, ə" AND examples = "œsophagus"