Shell is a type of Housing. Housing is a type of Structure. Porch is a type of Structure. you are likely to find Pot in/at/on Porch. 
Mandate is related to Law. Statute is derived from Law. Statute is a synonym of Act. Act is a type of Be. 
Shell --IsA--> Housing --IsA--> Structure <--IsA-- Porch <--AtLocation-- Pot 
Mandate <--RelatedTo--> Law <--DerivedFrom-- Statute <--Synonym--> Act --IsA--> Be 