one thing you do when you Killing is Scream. one thing you do when you Killing is Death. Death is related to Kill. 
Restaurant have Bathroom. you are likely to find Bill in/at/on Restaurant. Bill is related to Request. 
Scream <--HasSubevent-- Killing --HasSubevent--> Death <--RelatedTo--> Kill 
Bathroom <--HasA-- Restaurant <--AtLocation-- Bill <--RelatedTo--> Request 