Happiness can cause/lead to Love. Love is related to Strong. 
Alarm is a type of Warn. Alarm is related to Smoke. Smoke is related to Cancer. Cancer can Kill. 
Happiness --Causes--> Love <--RelatedTo--> Strong 
Warn <--IsA-- Alarm <--RelatedTo--> Smoke <--RelatedTo--> Cancer --CapableOf--> Kill 