one thing you do when you Disagree is Debate. Debate is related to Political. Political is related to Nation. National is etymologically related to Nation. 
Biology is related to School. Classroom is part of School. you are likely to find Computer in/at/on Classroom. Computer is related to Level. 
Disagree --HasSubevent--> Debate <--RelatedTo--> Political <--RelatedTo--> Nation <--EtymologicallyRelatedTo-- National 
Biology <--RelatedTo--> School <--PartOf-- Classroom <--AtLocation-- Computer <--RelatedTo--> Level 