Ground is related to Fog. Fog is a type of Film. Sacrifice is a type of Film. 
Physical is related to Statue. Statue is related to Island. Island is related to Tropical. 
Ground <--RelatedTo--> Fog --IsA--> Film <--IsA-- Sacrifice 
Physical <--RelatedTo--> Statue <--RelatedTo--> Island <--RelatedTo--> Tropical 