you are likely to find Confusion in/at/on Opera. Confusion is related to Corn. Corn is related to Large. Large is a synonym of Prominent. 
Human is a type of Being. German is a type of Human. German is a type of Teacher. Missionary is a type of Teacher. 
Opera <--AtLocation-- Confusion <--RelatedTo--> Corn <--RelatedTo--> Large <--Synonym--> Prominent 
Being <--IsA-- Human <--IsA-- German --IsA--> Teacher <--IsA-- Missionary 