Lie is related to Sleep. Sleep is related to Mode. Modify is etymologically related to Mode. Modify is a synonym of Affect. 
you are likely to find Darkness in/at/on Bed. Sheet can be used for Bed. Sheet is related to Ghost. Ghost is created by Death. 
Lie <--RelatedTo--> Sleep <--RelatedTo--> Mode <--EtymologicallyRelatedTo-- Modify <--Synonym--> Affect 
Darkness --AtLocation--> Bed <--UsedFor-- Sheet <--RelatedTo--> Ghost --CreatedBy--> Death 