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

Context paragraphs:
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.

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.

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.

O Saci (film): O Saci is a 1951 Brazilian children-family fantasy film, directed by Rodolfo Nanni, written by Nanni with a story by Arthur Neves, and based on the novel of same name written by Monteiro Lobato.  Noted for being the first family film to be ever made in Brazil, it is also the first theatrical "Sítio do Picapau Amarelo" adaptation.  Introducing young actress Olga Maria as Emília and Paulo Matozinho as the title character Saci, it adapts the novel in which Pedrinho (Lívio Nanni) demonstrates interest in capturing the supernatural, one-legged mulatto boy figure, the Saci, inhabiting the nearby virgin forest.  Curiously, in 1954 the film won the Saci Award, that rewarded the best films of the decade.

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.

William T. Kirkpatrick: William Thompson Kirkpatrick (10 January 1848 - 22 March 1921) was an Irish teacher and grammar school headmaster.  He is best known for having been the tutor of the two Lewis brothers from Belfast, Warnie Lewis and C.S. Lewis.  C.S. Lewis, who would later become well known as a literary critic, novelist, and Christian apologist, lived as a resident pupil with Kirkpatrick from 1914-1917.  In his autobiography, Lewis reports that he was significantly influenced by his tutor.

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.

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.

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

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".

Supporting paragraphs: Sítio do Picapau Amarelo (novel series) The Chronicles of Narnia
Answer: seven