Book is created by Author. Author is related to Job. Job is related to Activity. Training is a type of Activity. 
Decrease is a type of Process. Decrease is a synonym of Contract. Charter is a type of Contract. 
Book --CreatedBy--> Author <--RelatedTo--> Job <--RelatedTo--> Activity <--IsA-- Training 
Process <--IsA-- Decrease <--Synonym--> Contract <--IsA-- Charter 