Language is a type of Medium. Latin can be Language. Latin is similar to Greek. 
Stir is a type of Move. Reach is a type of Move. Reach is related to Extension. Extension is related to Leaf. 
Medium <--IsA-- Language <--HasProperty-- Latin <--SimilarTo--> Greek 
Stir --IsA--> Move <--IsA-- Reach <--RelatedTo--> Extension <--RelatedTo--> Leaf 