Reflection is a synonym of Expression. Expression is related to Sigh. the first thing you do when you Relax is Sigh. Vacation can be used for Relax. 
Network is a type of System. Network is related to News. News is related to Exciting. Lightning can be Exciting. 
Reflection <--Synonym--> Expression <--RelatedTo--> Sigh <--HasFirstSubevent-- Relax <--UsedFor-- Vacation 
System <--IsA-- Network <--RelatedTo--> News <--RelatedTo--> Exciting <--HasProperty-- Lightning 