Weight is related to Gym. you are likely to find Towel in/at/on Gym. 
Pain can cause/lead to Suffer. Pain is related to Medicine. Powder is a type of Medicine. Powder is related to Soap. 
Weight <--RelatedTo--> Gym <--AtLocation-- Towel 
Suffer <--Causes-- Pain <--RelatedTo--> Medicine <--IsA-- Powder <--RelatedTo--> Soap 