Dancing is related to Move. Reach is a type of Move. Reach is related to Length. Length is related to Term. 
Protocol is a synonym of Treaty. Treaty is a synonym of Convention. Convention is a synonym of Normal. 
Dancing <--RelatedTo--> Move <--IsA-- Reach <--RelatedTo--> Length <--RelatedTo--> Term 
Protocol <--Synonym--> Treaty <--Synonym--> Convention <--Synonym--> Normal 