Main is related to Idea. Idea is related to Inspiration. Inspiration is related to Motive. Motive is related to Crime. 
Time is a type of Adjust. Justify is a type of Adjust. Justify is related to Explain. 
Main <--RelatedTo--> Idea <--RelatedTo--> Inspiration <--RelatedTo--> Motive <--RelatedTo--> Crime 
Time --IsA--> Adjust <--IsA-- Justify <--RelatedTo--> Explain 