Ridge is a type of Form. Ridge is related to Average. Average is a synonym of Typical. Typical is a synonym of Conventional. 
Stadium can be used for Running. you are likely to find Toilet in/at/on Stadium. Toilet is related to Lid. 
Form <--IsA-- Ridge <--RelatedTo--> Average <--Synonym--> Typical <--Synonym--> Conventional 
Running <--UsedFor-- Stadium <--AtLocation-- Toilet <--RelatedTo--> Lid 