Rest is related to Nest. Nest is related to Dry. Dry is related to Mouth. 
Permission is related to Let. Let is related to Action. Action is related to Help. 
Rest <--RelatedTo--> Nest <--RelatedTo--> Dry <--RelatedTo--> Mouth 
Permission <--RelatedTo--> Let <--RelatedTo--> Action <--RelatedTo--> Help 