Vessel is related to Eye. Eye is related to Assistant. Assistant is related to Servant. Servant is related to Restaurant. 
Spectrum is a type of Array. Array is a type of Display. Presentation is a type of Display. Presentation is a type of Proposal. 
Vessel <--RelatedTo--> Eye <--RelatedTo--> Assistant <--RelatedTo--> Servant <--RelatedTo--> Restaurant 
Spectrum --IsA--> Array --IsA--> Display <--IsA-- Presentation --IsA--> Proposal 