Flower is related to Smell. Smell is related to Smoke. Smoke is related to Dark. Blanket can be Dark. 
Obligation is related to Due. Due is related to Homework. Homework is a type of Work. Work is related to Experience. 
Flower <--RelatedTo--> Smell <--RelatedTo--> Smoke <--RelatedTo--> Dark <--HasProperty-- Blanket 
Obligation <--RelatedTo--> Due <--RelatedTo--> Homework --IsA--> Work <--RelatedTo--> Experience 