Unexpected is derived from Expect. Expect is a synonym of Ask. Ask is related to Knowledge. you are likely to find Knowledge in/at/on Meeting. 
Willingness is a type of Emotion. Hate is a type of Emotion. Hate is related to Evil. Evil is a different concept from Good. 
Unexpected --DerivedFrom--> Expect <--Synonym--> Ask <--RelatedTo--> Knowledge --AtLocation--> Meeting 
Willingness --IsA--> Emotion <--IsA-- Hate <--RelatedTo--> Evil <--DistinctFrom--> Good 