Tribe is related to Collection. Collection is related to Record. Record is related to Circle. 
Like is related to Calm. Sleep requires Calm. one thing you do when you Reading is Sleep. 
Tribe <--RelatedTo--> Collection <--RelatedTo--> Record <--RelatedTo--> Circle 
Like <--RelatedTo--> Calm <--HasPrerequisite-- Sleep <--HasSubevent-- Reading 