user: Question: Who appointed the Conservative from Ontario on June 18, 1993?
Columns: ['Name', 'Party', 'Province (Division)', 'Date appointed', 'Appointed by', 'Left office']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Willie Adams', 'Liberal', 'Nunavut', 'April 5, 1977', 'Trudeau', 'incumbent']
SQL:

assistant: SELECT "Appointed by" FROM "Table" WHERE "Party" = 'Conservative' AND "Province (Division)" = 'Ontario' AND "Date appointed" = 'June 18, 1993';