Knock is a type of Sound. Sound is related to Volume. 
Successful is similar to Productive. Productive is related to Creative. Creative is a synonym of Original. Original is related to Idea. 
Knock --IsA--> Sound <--RelatedTo--> Volume 
Successful <--SimilarTo--> Productive <--RelatedTo--> Creative <--Synonym--> Original <--RelatedTo--> Idea 