Infrastructure is related to Bridge. Bridge is related to Long. Long is related to Letter. Letter is related to Drawing. 
Song is related to Medium. Language is a type of Medium. Russian is a type of Language. 
Infrastructure <--RelatedTo--> Bridge <--RelatedTo--> Long <--RelatedTo--> Letter <--RelatedTo--> Drawing 
Song <--RelatedTo--> Medium <--IsA-- Language <--IsA-- Russian 