“He was the son of the storm,” identifies a character through metaphorical lineage; “She, daughter of the sea, carried salt into every room,” gives identity and atmosphere at once; “The poet was the voice of the forgotten” uses an appositional phrase to define social role; “Langston Hughes, poet of Harlem, heard rivers older than memory.” Identificatory phrases can compress biography, perspective, or symbolic status; “Our teacher, keeper of the battered anthology, opened the door to winter.”