What is the full name of the sanitarian who inspected Amundsen High School on 2010/5/11?
full name refers to first_name, last_name;  Amundsen High School refers to dba_name = 'AMUNDSEN HIGH SCHOOL'; on 2010/5/11 refers to inspection_date = '2010-05-11'
SELECT T1.first_name, T1.last_name FROM employee AS T1 INNER JOIN inspection AS T2 ON T1.employee_id = T2.employee_id INNER JOIN establishment AS T3 ON T2.license_no = T3.license_no WHERE T2.inspection_date = '2010-05-11' AND T3.dba_name = 'AMUNDSEN HIGH SCHOOL' AND T1.title = 'Sanitarian'