Peer is related to Social. Social is related to Dance. you would Dance because Fun. Killing can be used for Fun. 
Post is related to Road. Road is related to Flat. Flat is related to Step. Step is related to Elevator. 
Peer <--RelatedTo--> Social <--RelatedTo--> Dance --MotivatedByGoal--> Fun <--UsedFor-- Killing 
Post <--RelatedTo--> Road <--RelatedTo--> Flat <--RelatedTo--> Step <--RelatedTo--> Elevator 