Complex sentence: Lake Brunner was named by John Rochfort for the 19th century explorer Thomas Brunner, and the Māori name for the lake, "Kotuku moana", means "Sea of herons".
Split into simpler sentences: Lake Brunner was named by John Rochfort for the 19th century explorer Thomas Brunner. The Māori name for the lake, "Kotuku moana", means "Sea of herons".