Witness is a type of Watch. Watch is related to Jewelry. Jewelry is related to Silver. Silver is related to Chemistry. 
Demographic is related to Population. Population is related to Growth. Growth is a synonym of Growing. Growing is a synonym of Increasing. 
Witness --IsA--> Watch <--RelatedTo--> Jewelry <--RelatedTo--> Silver <--RelatedTo--> Chemistry 
Demographic <--RelatedTo--> Population <--RelatedTo--> Growth <--Synonym--> Growing <--Synonym--> Increasing 