Premium is related to Quality. Ease is a type of Quality. Ease is a synonym of Independence. Independence is related to Colony. 
you are likely to find Shrimp in/at/on Plate. you are likely to find Pizza in/at/on Plate. 
Premium <--RelatedTo--> Quality <--IsA-- Ease <--Synonym--> Independence <--RelatedTo--> Colony 
Shrimp --AtLocation--> Plate <--AtLocation-- Pizza 