Lecture is related to Class. Class is a type of League. League is related to Nation. Nation is related to Sovereignty. 
Head is a synonym of Pass. Pass is a synonym of Happen. Happen is related to Fate. 
Lecture <--RelatedTo--> Class --IsA--> League <--RelatedTo--> Nation <--RelatedTo--> Sovereignty 
Head <--Synonym--> Pass <--Synonym--> Happen <--RelatedTo--> Fate 