Theme is a synonym of Root. Root is a synonym of Beginning. Beginning is related to Turn. 
Expression is a type of Demonstration. you are likely to find Information in/at/on Demonstration. Update is a type of Information. Update is a type of Modify. 
Theme <--Synonym--> Root <--Synonym--> Beginning <--RelatedTo--> Turn 
Expression --IsA--> Demonstration <--AtLocation-- Information <--IsA-- Update --IsA--> Modify 