Emission is related to Smoke. one thing you do when you Smoke is Die. 
Wide is related to Space. Space is related to Atmosphere. World have Atmosphere. World is related to Tower. 
Emission <--RelatedTo--> Smoke --HasSubevent--> Die 
Wide <--RelatedTo--> Space <--RelatedTo--> Atmosphere <--HasA-- World <--RelatedTo--> Tower 