Question: How many spin-off series were spawned by the TV show that featured Farrah Abraham in its first season while she was pregnant?

full_context: Document 1: My Teenage Dream Ended: My Teenage Dream Ended is the debut book and album by Farrah Abraham. Abraham came to prominence in the MTV reality TV show "Teen Mom".
Document 2: 16 and Pregnant: 16 and Pregnant is an American reality television series that aired from June 11, 2009 to July 1, 2014, on MTV. It followed the stories of pregnant teenage girls in high school dealing with the hardships of teenage pregnancy. Each episode featured a different teenage girl, with the episode typically beginning when she is 4 ⁄  – 8 months into her pregnancy. The episode typically ends when the baby is a few months old. The series is produced in a documentary format, with an animation on notebook paper showing highlights during each episode preceding the commercial breaks. "16 and Pregnant" has spawned three spin-off series: "Teen Mom", "Teen Mom 2" and "Teen Mom 3". Each series follows the lives of four girls from their respective season of "16 and Pregnant" as they navigate their first years of motherhood.
Document 3: List of Keeping Up with the Kardashians episodes: "Keeping Up with the Kardashians" is an American reality television series that has aired on E! since October 14, 2007. The series has aired thirteen seasons, and focuses on the personal and professional lives of the Kardashian–Jenner family. Its premise was originated with Ryan Seacrest, who additionally serves as an executive producer. The series focuses on sisters Kourtney, Kim, and Khloé Kardashian.
Document 4: 19 Kids and Counting: 19 Kids and Counting (formerly 17 Kids and Counting and 18 Kids and Counting) is an American reality television show that aired on the cable channel TLC for seven years until its cancellation in 2015. The show features the Duggar family: parents Jim Bob and Michelle Duggar and their 19 children—nine girls and 10 boys, all of whose names begin with the letter "J". During the life of the show, three children were born, three children were married and four grandchildren born.
Document 5: Keeping Up with the Kardashians: Keeping Up with the Kardashians (often abbreviated KUWTK) is an American reality television series that airs on the E! cable network. The show focuses on the personal and professional lives of the Kardashian–Jenner blended family. Its premise originated with Ryan Seacrest, who also serves as an executive producer. The series debuted on October 14, 2007 and has subsequently become one of the longest-running reality television series in the country. The fourteenth season of the series will premiere on October 1, 2017.
Document 6: Controversy and criticism of Jersey Shore: Jersey Shore is a reality television series that aired on MTV. It follows eight housemates while they live, work and party at the Jersey Shore. The show made its debut amid large amounts of controversy regarding the use of the words "guido/guidette", portrayals of Italian-American stereotypes and scrutiny from locals because the cast members are not residents from the area. Premiered in December 2009, it remains MTV's most controversial show to date.
Document 7: List of 16 and Pregnant episodes: "16 and Pregnant" is an American reality television series that debuted on June 11, 2009, on MTV. It follows the stories of pregnant teenage girls in high school dealing with the hardships of teenage pregnancy. Each episode features a different teenage girl, with the episode typically beginning when she is 4 ⁄  – 8 months into her pregnancy. The episode typically ends when the baby is a few months old. The series is produced in a documentary format, with an animation on notebook paper showing highlights during each episode preceding the commercial breaks. "16 and Pregnant" has spawned three spin-off series: "Teen Mom", "Teen Mom 2" and "Teen Mom 3". Each series follows the lives of four girls from their respective season of "16 and Pregnant" as they navigate their first years of motherhood.
Document 8: Maci Bookout: Maci DeShane McKinney (neé Maci Deshane Bookout; born August 10, 1991) is an American reality television personality, author, and public speaker. Born and raised in Chattanooga, Tennessee, she received public attention after being cast in the reality television series "16 and Pregnant" in 2009, which documented the pregnancies and first months of motherhood for several young women. Later that year she was cast in the spin-off series "Teen Mom", and appeared in each of its four seasons until its conclusion in 2012. In March 2015, Bookout, along with Catelynn Baltierra, Amber Portwood, and Farrah Abraham, returned to MTV for the fifth season of the show, renamed "Teen Mom OG".
Document 9: Farrah Abraham: Farrah Lynn Abraham (born May 31, 1991) is an American reality television personality. Born in Omaha, Nebraska, and raised in Council Bluffs, Iowa, she received public attention after being cast in the reality television series "16 and Pregnant" in 2009, which documented the pregnancies and first months of motherhood for several young women. Later that year she was cast in the spin-off series "Teen Mom", and appeared in each of its four seasons until its conclusion in 2012. That August she released her debut studio album and first memoir, both of which were titled "My Teenage Dream Ended". The book made it onto The New York Times Best Seller list.
Document 10: Teen Mom: Teen Mom, renamed Teen Mom OG since the fifth season, is an American reality television series that premiered on December 8, 2009 on MTV. Developed as the first spin-off of "16 and Pregnant", it aired four seasons before its initial conclusion on October 9, 2012. Its revival was announced in February 2015, with its fifth season scheduled to premiere on March 23, 2015. The series follows the lives of Farrah Abraham, Maci Bookout, Catelynn Lowell, and Amber Portwood, who were featured on the first season of "16 and Pregnant"; it documents their first years of motherhood and places additional emphasis on strained family and romantic relationships.
Document 11: Counting On: Counting On (formerly Jill & Jessa: Counting On) is an American reality television show that has aired on the cable channel TLC since 2015. A spin-off show of "19 Kids and Counting", it features the Duggar family: Jill Dillard, Jessa Seewald, sixteen of their seventeen siblings, and parents Jim Bob and Michelle Duggar. The show was created in the wake of the Josh Duggar molestation controversy and subsequent cancellation of 19 Kids and Counting.
Document 12: Road Rules: Road Rules is an MTV reality show that was a sister show of the network's flagship reality show, "The Real World". The series, which was only MTV's second reality show ("The Real World" being its first), debuted on July 19, 1995, and ended on May 9, 2007. This allowed "Road Rules" a total of 14 seasons and 12 years on the air.
Document 13: Made in Chelsea: LA: Made in Chelsea: LA, a spin-off series of Made in Chelsea, a British structured-reality television programme, was confirmed on 14 May 2015. It was announced that the cast of "Made in Chelsea" would be travelling to Los Angeles to film a special series of the show. It was revealed that this would be a stand-alone series which would not be promoted as the tenth series. The tenth series will in fact follow in October 2015. Filming for the spin-off began in late May 2015 and concluded in late-July. This is the second spin-off show filmed in America following the special the previous year. The third episode of this series was filmed in Las Vegas. The six-episode series began on 10 August 2015 on E4. It also featured the brief return of former cast member Gabriella Ellis, as well as the permanent return of Ollie Locke. It was the only series to include American cast members Olivia Fox and Naz Gharai, and the last to include Josh Shepherd. Whilst most of the Chelsea cast featured in this spin-off, there was notable absences from Elliot Cross, Oliver Proudlock, Millie Wilkinson, Nicola Hughes, Rosie Fortescue, Sam Thompson, Spencer Matthews, Tiff Watson, and Victoria Baker-Harber. The series included the end of the relationship between Josh and Stephanie, Jamie starting a holiday romance with Naz before eventually realising he actually has feelings for Jess, and Binky opening up to JP about her growing love for him only for him to break things off completely.
Document 14: List of 19 Kids and Counting episodes: The following is a list of episodes of the television series "19 Kids and Counting". The program is a reality/documentary series about the Duggar Family, shown on TLC. The series began on September 29, 2008, and has had ten seasons, plus eighteen specials to date. TLC suspended airing the show on May 22, 2015, and officially canceled it on July 16, 2015. The last episode aired May 19, 2015.
Document 15: List of Counting On episodes: Counting On (formerly Jill & Jessa: Counting On) is an American reality television show that has aired on the cable channel TLC since 2015. A spin-off show of "19 Kids and Counting", it features the Duggar family: Jill Dillard, Jessa Seewald, sixteen of their seventeen siblings, and parents Jim Bob and Michelle Duggar. The show was created in the wake of the Josh Duggar molestation controversy and subsequent cancellation of 19 Kids and Counting.
ground_truth: three