Period is a type of Part. Part is related to Bone. Bone is related to Stability. 
Resolution is related to Fix. Fix is related to Medical. Medical is related to Fever. Fever is related to Hay. 
Period --IsA--> Part <--RelatedTo--> Bone <--RelatedTo--> Stability 
Resolution <--RelatedTo--> Fix <--RelatedTo--> Medical <--RelatedTo--> Fever <--RelatedTo--> Hay 