you are likely to find Sweat in/at/on Bed. Bed is the opposite of Awake. Awake is a synonym of Alive. Alive is related to Person. 
Darkness is a type of Scene. Scene is related to Act. Implementation is a type of Act. 
Sweat --AtLocation--> Bed <--Antonym--> Awake <--Synonym--> Alive <--RelatedTo--> Person 
Darkness --IsA--> Scene <--RelatedTo--> Act <--IsA-- Implementation 