Bone is related to Piece. Piece is related to Amount. Amount is related to Strength. Strengthen is derived from Strength. 
Material is related to Brick. Brick is related to Square. Square is related to Case. Case is related to Pack. 
Bone <--RelatedTo--> Piece <--RelatedTo--> Amount <--RelatedTo--> Strength <--DerivedFrom-- Strengthen 
Material <--RelatedTo--> Brick <--RelatedTo--> Square <--RelatedTo--> Case <--RelatedTo--> Pack 