Question: How many novels are in the C.S. Lewis series that the Brazilian series "Sítio do Picapau Amarelo" has been compared to?

full_context: Document 1: Narnia (world): Narnia is a fantasy world created by C. S. Lewis as the primary location for his series of seven fantasy novels for children, "The Chronicles of Narnia". The world is so called after the country of Narnia, in which much of the action of the Chronicles takes place.
Document 2: The Chronicles of Narnia: The Chronicles of Narnia is a series of seven fantasy novels by C. S. Lewis. It is considered a classic of children's literature and is the author's best-known work, having sold over 100 million copies in 47 languages. Written by Lewis, illustrated by Pauline Baynes, and originally published in London between 1950 and 1956, "The Chronicles of Narnia" has been adapted several times, complete or in part, for radio, television, the stage, and film.
Document 3: Monteiro Lobato: José Bento Renato Monteiro Lobato (April 18, 1882 – July 4, 1948) was one of Brazil's most influential writers, mostly for his children's books set in the fictional Sítio do Picapau Amarelo (Yellow Woodpecker Farm) but he had been previously a prolific writer of fiction, a translator and an art critic. He also founded one of Brazil's first publishing houses (Companhia Editora Nacional) and was a supporter of nationalism.
Document 4: C. S. Lewis: Clive Staples Lewis (29 November 1898 – 22 November 1963) was a British novelist, poet, academic, medievalist, literary critic, essayist, lay theologian, broadcaster, lecturer, and Christian apologist. He held academic positions at both Oxford University (Magdalen College, 1925–1954) and Cambridge University (Magdalene College, 1954–1963). He is best known for his works of fiction, especially "The Screwtape Letters", "The Chronicles of Narnia", and "The Space Trilogy", and for his non-fiction Christian apologetics, such as "Mere Christianity", "Miracles", and "The Problem of Pain".
Document 5: The Voyage of the Dawn Treader: The Voyage of the Dawn Treader is a high fantasy novel for children by C. S. Lewis, published by Geoffrey Bles in 1952. It was the third published of seven novels in "The Chronicles of Narnia" (1950–1956) and Lewis had finished writing it in 1950, before the first book was out. It is volume five in recent editions, which are sequenced according to Narnia history. Like the others it was illustrated by Pauline Baynes and her work has been retained in many later editions. It is the only Narnia book that does not have a main villain.
Document 6: Sítio do Picapau Amarelo (animated series): Sítio do Picapau Amarelo (roughly Yellow Woodpecker Farm or Yellow Woodpecker Ranch) is an animated series loosely based on the eponymous series of books "Sítio do Picapau Amarelo" by Monteiro Lobato. It was first displayed on January 7, 2012, and is produced by Rede Globo and Mixer. Each episode of the series took five weeks to get ready and were all based on the book of "Reinações Narizinho", published in 1931 by Monteiro Lobato. The series finale on September 26th 2016
Document 7: Prince Caspian: Prince Caspian (originally published as Prince Caspian: The Return to Narnia) is a high fantasy novel for children by C. S. Lewis, published by Geoffrey Bles in 1951. It was the second published of seven novels in "The Chronicles of Narnia" (1950–1956), and Lewis had finished writing it in 1949, before the first book was out. It is volume four in recent editions of the series, sequenced according to Narnia history. Like the others, it was illustrated by Pauline Baynes and her work has been retained in many later editions.
Document 8: Sítio do Picapau Amarelo (comics): Sítio do Picapau Amarelo was a Brazilian comic book series based on the eponymous novel series Sítio do Picapau Amarelo by Monteiro Lobato. It was originally released in 1977 on the success of the TV show produced by Rede Globo, comic books were published by the publisher RGE who would later become Editora Globo. It continued to be sold until 1979 when the character Emília now has her own comic replacing the Sítio do Picapau Amarelo, but the comic only lasted a year being sold, and in 1981 the Sítio do Picapau Amarelo returned to be published. The comic being published remained until 1984, years before the TV series is no longer in production.
Document 9: Narnia (disambiguation): "The Chronicles of Narnia" are a series of fantasy novels by C. S. (Clive Staples) Lewis, based on which are:
Document 10: Sítio do Picapau Amarelo (video game): Sítio do Picapau Amarelo, is a 1997 platforming video game developed by Tectoy for the Sega Master System. It was based on the eponymous series broadcast in the 1970s, which in turn was based on the book series by Monteiro Lobato. As Férias Frustradas do Pica-Pau it was released in Brazil only.
Document 11: Emilia (Sítio do Picapau Amarelo): Emília, also known as the Marchioness of Rabicó or Emília, A Boneca Gente ("The Human Doll") is a fictional character and a titular of the "Sítio do Picapau Amarelo" series of fantasy novels written by Brazilian author Monteiro Lobato. A doll with a rough, antagonistic personality and an independent, anarchist behaviour, Emília is Lobato's most popular creation alongside Jeca Tatu and, according to studies and analyses of his work, she is his personification in the stories and that, towards the character, Lobato expresses his own ideas. Even though, Lobato has stated that Emília is "sometimes so independent that neither I, nor her father, succeed in controlling her".
Document 12: Sítio do Picapau Amarelo (novel series): Sítio do Picapau Amarelo (literally translated and roughly known as "the Yellow Woodpecker Farm" or "the Yellow Woodpecker Ranch") is the title given to a series of 23 fantasy novels written by Brazilian author Monteiro Lobato between 1920 and 1940. The series is considered representative of Brazilian children's literature and as the Brazilian equivalent to children's classics such as C. S. Lewis, "The Chronicles of Narnia" and L. Frank Baum's "The Wonderful Wizard of Oz" series. Lobato's single original adult fiction, a sci-fi novel entitled "O Presidente Negro" ("The Black President") set in the far future, would not achieve the same popularity of "Sítio". The concept was introduced in Monteiro Lobato's 1920 novel "A Menina do Narizinho Arrebitado", and was later republished as the first chapter of "Reinações de Narizinho", which is the first novel of the actual "Sítio" series. The main setting is Sítio do Picapau Amarelo, where a boy, a girl and their living and thinking toys enjoy exploring adventures in fantasy, discovery and learning. On several occasions, they leave the ranch to explore other worlds such as Neverland, the mythological Ancient Greece, an underwater world known as the Clear Waters Kingdom, and outer space. "Sítio" is often symbolized by the character of Emília, Lobato's most famous creation alongside Jeca Tatu.
Document 13: Sítio do Picapau Amarelo (fictional farm): The Sítio do Picapau Amarelo (literally translated and roughly known as the Yellow Woodpecker Farm or the Yellow Woodpecker Ranch) is the primary setting for the series of children novels of same name, written by Brazilian author Monteiro Lobato. The place is described as "a small farm with a pretty cottage, surrounded by trees" and simultaneously close to several other subsettings: a stream, a virgin forest and a small village, both named the Tucanos.
Document 14: The Silver Chair: The Silver Chair is a high fantasy novel for children by C. S. Lewis, published by Geoffrey Bles in 1953. It was the fourth published of seven novels in "The Chronicles of Narnia" (1950–1956); it is volume six in recent editions, which are sequenced according to Narnian history. Like the others, it was illustrated by Pauline Baynes and her work has been retained in many later editions.
Document 15: The Lion, the Witch and the Wardrobe: The Lion, the Witch and the Wardrobe is a fantasy novel for children by C. S. Lewis, published by Geoffrey Bles in 1950. It is the first published and best known of seven novels in "The Chronicles of Narnia" (1950–1956). Among all the author's books it is also the most widely held in libraries. Although it was written as well as published first in the series, it is volume two in recent editions, which are sequenced by the stories' chronology (the first being "The Magician's Nephew"). Like the others, it was illustrated by Pauline Baynes, and her work has been retained in many later editions.
ground_truth: seven