you are likely to find Darkness in/at/on Bed. Darkness is related to Like. Like is related to Door. 
Slap is related to Physical. Physical is the opposite of Mental. Mental is related to Idea. Idea is related to Bulb. 
Bed <--AtLocation-- Darkness <--RelatedTo--> Like <--RelatedTo--> Door 
Slap <--RelatedTo--> Physical <--Antonym--> Mental <--RelatedTo--> Idea <--RelatedTo--> Bulb 