Troubled is related to Bridge. you are likely to find Water in/at/on Bridge. Water is related to Heat. 
Can is related to Useful. Useful is related to Product. Product is a type of Consequence. 
Troubled <--RelatedTo--> Bridge <--AtLocation-- Water <--RelatedTo--> Heat 
Can <--RelatedTo--> Useful <--RelatedTo--> Product --IsA--> Consequence 