Drift is a type of Crop. Crop is related to Cash. Cash can be used for Pay. 
Prior is related to Experience. Experience is related to Living. Living is related to Cottage. 
Drift --IsA--> Crop <--RelatedTo--> Cash --UsedFor--> Pay 
Prior <--RelatedTo--> Experience <--RelatedTo--> Living <--RelatedTo--> Cottage 