Depression is related to Blue. Blue is related to Depressed. 
Sin is related to Act. Act is a synonym of Routine. Routine is related to Day. Day is related to Late. 
Depression <--RelatedTo--> Blue <--RelatedTo--> Depressed 
Sin <--RelatedTo--> Act <--Synonym--> Routine <--RelatedTo--> Day <--RelatedTo--> Late 