you would Learn because Know. Landmark can be used for Learn. 
Pitch is related to Slope. Slope is related to Rate. Rate is related to Score. Deficit is a type of Score. 
Know <--MotivatedByGoal-- Learn <--UsedFor-- Landmark 
Pitch <--RelatedTo--> Slope <--RelatedTo--> Rate <--RelatedTo--> Score <--IsA-- Deficit 