Paper is related to Gift. Gift is related to Ring. Ring is related to Wedding. 
Lecture is related to College. College is related to Poster. Poster is related to Teenager. Teenage is derived from Teenager. 
Paper <--RelatedTo--> Gift <--RelatedTo--> Ring <--RelatedTo--> Wedding 
Lecture <--RelatedTo--> College <--RelatedTo--> Poster <--RelatedTo--> Teenager <--DerivedFrom-- Teenage 