Observe is related to Gaze. Gaze is a synonym of Look. Look is related to Action. Action is related to Fill. 
Office is a type of Suite. you are likely to find Client in/at/on Office. 
Observe <--RelatedTo--> Gaze <--Synonym--> Look <--RelatedTo--> Action <--RelatedTo--> Fill 
Suite <--IsA-- Office <--AtLocation-- Client 