What is the average amount of resources from projects that have received donations per honoree?
donations per honoree refers to for_honoree = 't'; average refers to DIVIDE(sum(item_quantity), count(donationid))
SELECT AVG(T1.item_quantity) FROM resources AS T1 INNER JOIN donations AS T2 ON T1.projectid = T2.projectid WHERE T2.for_honoree = 't'