Question: Count the number of clubs for which the student named "Eric Tai" is a member.
SQL: SELECT count(DISTINCT t1.clubname) FROM club AS t1 JOIN member_of_club AS t2 ON t1.clubid  =  t2.clubid JOIN student AS t3 ON t2.stuid  =  t3.stuid WHERE t3.fname  =  "Eric" AND t3.lname  =  "Tai"