user: Question: What is Hon. VICENTE Q. ROXAS appointment date?
Columns: ['Name', 'Position', 'Date of Appointment', 'Date of Birth', 'Date of Retirement']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Hon. CONRADO M. VASQUEZ, JR.', 'Presiding Justice', 'March 22, 1994', 'January 6, 1940', 'January 6, 2010']
SQL:

assistant: SELECT "Date of Appointment" FROM "Table" WHERE "Name" = 'Hon. VICENTE Q. ROXAS';