Quantity is a synonym of Measure. Measure is related to Time. 
Conscious is related to Voluntary. Voluntary is related to Work. Work is related to Play. Organ can be used for Play. 
Quantity <--Synonym--> Measure <--RelatedTo--> Time 
Conscious <--RelatedTo--> Voluntary <--RelatedTo--> Work <--RelatedTo--> Play <--UsedFor-- Organ 