How many students are taught by teacher TARRING LEIA?
SELECT count(*) FROM list AS T1 JOIN teachers AS T2 ON T1.classroom  =  T2.classroom WHERE T2.firstname  =  "TARRING" AND T2.lastname  =  "LEIA"
SELECT count(*) FROM list AS T1 JOIN teachers AS T2 ON T1.classroom  =  T2.classroom WHERE T2.firstname  =  "TARRING" AND T2.lastname  =  "LEIA"
[{'count(*)': 0}]