CREATE TABLE table_name_27 (term_in_office VARCHAR, member VARCHAR, party VARCHAR, state VARCHAR)

Name the term in office for liberal and state of sa for ian mclachlan
SELECT term_in_office FROM table_name_27 WHERE party = "liberal" AND state = "sa" AND member = "ian mclachlan"
SELECT "term_in_office" FROM "table_name_27" WHERE "ian mclachlan" = "member" AND "liberal" = "party" AND "sa" = "state"