Tongue is a type of Play. Tongue is part of Throat. Throat is related to Swallow. 
Landscape is related to Photo. Photo is a synonym of Picture. Picture is related to Describe. Describe is related to Explanation. 
Play <--IsA-- Tongue --PartOf--> Throat <--RelatedTo--> Swallow 
Landscape <--RelatedTo--> Photo <--Synonym--> Picture <--RelatedTo--> Describe <--RelatedTo--> Explanation 