What is the full name of the professor who graduated from an Ivy League School?
Ivy League school is assembled by 8 universities: Brown University, Columbia University, Cornell University, Dartmouth College, Harvard University, Princeton University, University of Pennsylvania and Yale University;
SELECT first_name, last_name FROM prof WHERE graduate_from IN ( 'Brown University',  'Columbia University',  'Cornell University',  'Dartmouth College',  'Harvard University',  'Princeton University',  'University of Pennsylvania',  'Yale University' )
database name:db_id cs_semester
course table course Cols: course id dtype integer, name dtype text, credit dtype integer, difficulty dtype integer, 
prof table prof Cols: professor id dtype integer, gender dtype text, first name dtype text, last name dtype text, email dtype text, popularity dtype integer, teaching ability dtype integer, graduate from dtype text, 
RA table RA Cols: student id dtype integer, capability dtype integer, professor id dtype integer, salary dtype text, 
registration table registration Cols: course id dtype integer, student id dtype integer, grade dtype text, satisfying degree dtype integer, 
student table student Cols: student id dtype integer, first name dtype text, last name dtype text, phone number dtype text, email dtype text, intelligence dtype integer, graduate point average dtype real, type dtype text, 
