Information:  - Lucy Pevensie is a fictional character in C. S. Lewis's "The Chronicles of Narnia" series. She is the youngest of the four Pevensie children, and the first to find the Wardrobe entrance to Narnia in "The Lion, the Witch and the Wardrobe". Of all the Pevensie children, Lucy is the closest to Aslan. Also, of all the humans who have visited Narnia, Lucy is perhaps the one that believes in Narnia the most. She is ultimately crowned Queen Lucy the Valiant, co-ruler of Narnia along with her two brothers and her sister. Lucy is the central character of the four siblings in the novels. Lucy is a principal character in three of the seven books ("The Lion, the Witch and the Wardrobe", "Prince Caspian", and "The Voyage of the Dawn Treader"), and a minor character in two others ("The Horse and His Boy" and "The Last Battle").  - In C. S. Lewis' "Chronicles of Narnia" fictional series, Rilian (2325-?) is the son of King Caspian and the grandson of Ramandu the star. Rilian appears in two of the seven books, "The Silver Chair" and briefly in "The Last Battle".  - Eustace Clarence Scrubb is a fictional character in C. S. Lewis's Chronicles of Narnia. He appears in "The Voyage of the Dawn Treader", "The Silver Chair", and "The Last Battle". In "The Voyage of the Dawn Treader", he is accompanied by Edmund and Lucy Pevensie, his cousins. In "The Silver Chair" and "The Last Battle", he is accompanied by Jill Pole, a classmate from his school.  - The Dawn Treader was a Narnian ship in the fictional world of "The Chronicles of Narnia". It was built by King Caspian X and is featured primarily in the book "The Voyage of the Dawn Treader". It was the first Narnian ship to be built since the Golden Age and was commissioned by King Caspian, so that he might sail beyond the Lone Islands and on to the unknown Eastern Ocean to seek the Seven Great Lordsfriends of his father who had disappeared during the reign of Miraz as Lord Protector of Narnia after he had murdered King Caspian IX.  - The Lady of the Green Kirtle , also called Queen of Underland and Queen of the Deep Realm , is the main antagonist in The Silver Chair by C. S. Lewis . She is sometimes called briefly the Green Lady ( on analogy with Jadis , the White Lady ) , and she is known also as the Emerald Witch ; neither name , however , appears in Lewis 's text . She enslaved Prince Rilian of Narnia and a horde of gnomes by her witchcraft , and planned to use them to take over Narnia . She is foiled by three friends of Aslan : Eustace Scrubb , Jill Pole , and Puddleglum .    After reading the paragraphs above, we are interested in knowing the entity with which 'lady of the green kirtle' exhibits the relationship of 'noble title'. Find the answer from the choices below.  Choices: - king  - prince
king