Infection can cause/lead to Death. you are likely to find Death in/at/on Funeral. Funeral is related to Dead. Dead is related to Fall. 
Old is related to Senior. Senior is similar to Major. 
Infection --Causes--> Death --AtLocation--> Funeral <--RelatedTo--> Dead <--RelatedTo--> Fall 
Old <--RelatedTo--> Senior <--SimilarTo--> Major 