Learning is related to Answer. Feedback is a type of Answer. Feedback is related to Reply. Reply is related to Conversation. 
Shoulder is related to Hand. Hand is a type of Ability. Ability is related to Could. 
Learning <--RelatedTo--> Answer <--IsA-- Feedback <--RelatedTo--> Reply <--RelatedTo--> Conversation 
Shoulder <--RelatedTo--> Hand --IsA--> Ability <--RelatedTo--> Could 