Shot is a synonym of Crack. Crack is a synonym of Snap. 
Activist is a type of Person. Teacher is a type of Person. Teacher is related to Head. Head is related to Piece. 
Shot <--Synonym--> Crack <--Synonym--> Snap 
Activist --IsA--> Person <--IsA-- Teacher <--RelatedTo--> Head <--RelatedTo--> Piece 