you are likely to find Lighting in/at/on Office. you are likely to find Mouse in/at/on Office. you are likely to find Mouse in/at/on Desk. Desk is related to Working. 
Supervisor is a type of Person. Person does not want (to) Dream. 
Lighting --AtLocation--> Office <--AtLocation-- Mouse --AtLocation--> Desk <--RelatedTo--> Working 
Supervisor --IsA--> Person --NotDesires--> Dream 