Grandmother is related to Elderly. Elderly is related to Care. Care is a synonym of Maintenance. 
Band is related to Play. Play is related to Song. you are likely to find Sound in/at/on Song. Sound is related to Ear. 
Grandmother <--RelatedTo--> Elderly <--RelatedTo--> Care <--Synonym--> Maintenance 
Band <--RelatedTo--> Play <--RelatedTo--> Song <--AtLocation-- Sound <--RelatedTo--> Ear 