Constitutional is derived from Constitution. Constitution is related to American. American is related to Congress. 
Entrance is a type of Opening. Entrance is a synonym of Approach. Approach is related to Plan. Plan is related to Lesson. 
Constitutional --DerivedFrom--> Constitution <--RelatedTo--> American <--RelatedTo--> Congress 
Opening <--IsA-- Entrance <--Synonym--> Approach <--RelatedTo--> Plan <--RelatedTo--> Lesson 