Battery can be used for Power. Battery is related to Motor. Motor is related to Machine. 
Mouse is related to Famous. Famous is related to Popular. Popular is related to Chicken. Chicken is related to Meal. 
Power <--UsedFor-- Battery <--RelatedTo--> Motor <--RelatedTo--> Machine 
Mouse <--RelatedTo--> Famous <--RelatedTo--> Popular <--RelatedTo--> Chicken <--RelatedTo--> Meal 