Campus is related to College. College is related to Lecture. Lecture is related to Educational. Educational is related to School. 
Brother is related to Girl. Girl is related to Small. Small is related to Hill. 
Campus <--RelatedTo--> College <--RelatedTo--> Lecture <--RelatedTo--> Educational <--RelatedTo--> School 
Brother <--RelatedTo--> Girl <--RelatedTo--> Small <--RelatedTo--> Hill 