Sphere is a type of Surface. Surface is related to Edge. Edge is a type of Slip. Slip is related to Loose. 
Outer is similar to External. External is the opposite of Internal. Internal is related to Liver. 
Sphere --IsA--> Surface <--RelatedTo--> Edge --IsA--> Slip <--RelatedTo--> Loose 
Outer <--SimilarTo--> External <--Antonym--> Internal <--RelatedTo--> Liver 