Pop is related to Population. Population is related to Size. Size is related to Gravity. Gravity is related to Drop. 
Organized is related to Clean. Cloth can be used for Clean. 
Pop <--RelatedTo--> Population <--RelatedTo--> Size <--RelatedTo--> Gravity <--RelatedTo--> Drop 
Organized <--RelatedTo--> Clean <--UsedFor-- Cloth 