Bother is a synonym of Headache. one thing you do when you Thinking is Headache. Thinking can cause/lead to Insight. Insight is related to Cite. 
Friend is related to Peer. Peer is related to Social. 
Bother <--Synonym--> Headache <--HasSubevent-- Thinking --Causes--> Insight <--RelatedTo--> Cite 
Friend <--RelatedTo--> Peer <--RelatedTo--> Social 