How many papers were published in International Workshop on Inductive Logic Programming from 2001 to 2009?
From 2001 to 2009 refer to Year 2001 BETWEEN 2009; 'International Workshop on Inductive Logic Programming' refer to Conference.FullName

SELECT COUNT(T1.Id) FROM Paper AS T1 INNER JOIN Conference AS T2 ON T1.ConferenceId = T2.Id WHERE T2.FullName = 'International Workshop on Inductive Logic Programming' AND T1.Year BETWEEN 2001 AND 2009