Market is related to Outside. you are likely to find Animal in/at/on Outside. Wolf is a type of Animal. 
you are likely to find Curtain in/at/on Theater. you are likely to find Curtain in/at/on House. House is related to Barn. 
Market <--RelatedTo--> Outside <--AtLocation-- Animal <--IsA-- Wolf 
Theater <--AtLocation-- Curtain --AtLocation--> House <--RelatedTo--> Barn 