Environment is a type of Situation. Size is a type of Situation. Size is related to Waist. Waist is related to Chest. 
Spending is related to Cost. Cost is related to Like. Like is related to Creature. 
Environment --IsA--> Situation <--IsA-- Size <--RelatedTo--> Waist <--RelatedTo--> Chest 
Spending <--RelatedTo--> Cost <--RelatedTo--> Like <--RelatedTo--> Creature 