Spectrum is a type of Scope. Scope is a type of Extent. Extent is a type of Degree. Degree is a synonym of Grade. 
Reason is related to Propose. Propose is related to Will. 
Spectrum --IsA--> Scope --IsA--> Extent --IsA--> Degree <--Synonym--> Grade 
Reason <--RelatedTo--> Propose <--RelatedTo--> Will 