Gentle is related to Manner. Manner is related to Good. Good is a synonym of Full. 
Protest is related to Social. Social is related to Class. Labor is a type of Class. Slavery is a type of Labor. 
Gentle <--RelatedTo--> Manner <--RelatedTo--> Good <--Synonym--> Full 
Protest <--RelatedTo--> Social <--RelatedTo--> Class <--IsA-- Labor <--IsA-- Slavery 