Shopping is related to Walk. Foot can be used for Walk. 
Cite is related to Insight. one thing you do when you Learning is Insight. Learning is related to Knowledge. Knowledge is related to Brain. 
Shopping <--RelatedTo--> Walk <--UsedFor-- Foot 
Cite <--RelatedTo--> Insight <--HasSubevent-- Learning <--RelatedTo--> Knowledge <--RelatedTo--> Brain 