Official is related to Event. Event is a type of Circumstance. Circumstance is a synonym of Consideration. 
Harvest is a synonym of Produce. Produce can cause/lead to Appear. Appear is a type of Happen. 
Official <--RelatedTo--> Event --IsA--> Circumstance <--Synonym--> Consideration 
Harvest <--Synonym--> Produce --Causes--> Appear --IsA--> Happen 