Store can be used for Purchase. you are likely to find Food in/at/on Store. Food is related to Bar. Bar is related to Vendor. 
Landscape is related to Photo. Photo is a synonym of Picture. Picture is related to Describe. Describe is related to Explanation. 
Purchase <--UsedFor-- Store <--AtLocation-- Food <--RelatedTo--> Bar <--RelatedTo--> Vendor 
Landscape <--RelatedTo--> Photo <--Synonym--> Picture <--RelatedTo--> Describe <--RelatedTo--> Explanation 