Question: Which of the following is a series of 3 documentary films released between 2007 and 2011: Zeitgeist or Great Old Amusement Parks?

Context paragraphs:
Family Kingdom Amusement Park: Family Kingdom Amusement Park is a seaside amusement park in Myrtle Beach, South Carolina.  Located on Ocean Boulevard, in the heart of Myrtle Beach, the amusement park has 37 rides for adults and children of all ages, including thrill rides, family rides, kiddie rides and go karts.  In 2007, TripAdvisor ranked it at number five on its list of the top 10 amusement parks outside Orlando.

Haunted attraction (simulated): Haunted attractions are a form of entertainment that simulate the experience of entering haunted locations that might be inhabited by ghosts, monsters, witches, or serial killers. Humorous characters such as The Addams Family, Casper the Friendly Ghost, or The Munsters may be included.  Haunted attractions can be created at many locations: temporarily constructed simulated "haunted houses" or actual abandoned and dilapidated homes, corn mazes or cornfields, hedge mazes, farms or farmhouses, wooded areas or forests, abandoned asylums, defunct or old prisons, abandoned amusement parks or active amusement parks, ships or boats, abandoned factories, shopping malls, and parks.

Luna Park, Chicago: Luna Park was an amusement park that was in operation in Chicago, Illinois, from 1907 to 1911.  Located on the plot of a former picnic grove at the corner of 51st and Halsted Streets, it was owned by an investment group led by boxing promoter James "Big Jim" O'Leary (son of Mrs. O'Leary of Great Chicago Fire fame).  A trolley park occupying only ten acres, Luna Park was smaller than most of the other Chicago amusement parks of the era (most notably Riverview Park and White City; in fact, Riverview Park was the largest amusement park in existence at that time).  O'Leary became the park's manager in 1908.

Great Old Amusement Parks: Great Old Amusement Parks is a 1999 PBS television documentary VHS by Rick Sebak of WQED Pittsburgh.

Parques Reunidos: Parques Reunidos is an international entertainment operator based in Madrid, Spain.  The group operates over 50 parks in almost a dozen countries.  Parques Reunidos operates theme and amusement parks, zoos, water parks, family entertainment centers, and cable cars.  These facilities are located in Spain, Belgium, Norway, Denmark, France, Italy, the United Kingdom, Argentina, and the United States.  Through acquisitions of established names such as Kennywood Entertainment Company, Dutch Wonderland and Palace Entertainment, Parques Reunidos greatly expanded its presence in American amusement operations beginning in 2007 through today.  Annual visitors to the Groups attractions exceed 22 million, with revenue exceeding $570 million (USD).  In January 2007, Parques Reunidos was acquired by the British private equity firm, Candover Investments.  In 2008 it had the fifth-highest attendance figures for worldwide chains with 24.9 million, ahead of Busch Entertainment Corporation and Cedar Fair.

North Point State Park: North Point State Park is a public recreation area located on Chesapeake Bay in Edgemere, Baltimore County, Maryland.  The state park includes the site of the former Bay Shore Park, which was one of the state's premiere amusement parks during the first half of the 20th century.  The park features restored remnants of the old amusement park as well as facilities for swimming, picnicking, bicycling, and hiking.  Black Marsh, a 667 acre state wildlands area, makes up half the park's area.  The park is administered by the Maryland Department of Natural Resources.

Gay World Amusement Park: Located between Geylang Road and Grove Road (now Mountbatten Road), Gay World was one of the famous trio of "World" amusement parks in Singapore.  Together with the other two "Worlds", Great World Amusement Park (1930s–1978) at Kim Seng Road and New World Amusement Park (1923–1987) at Jalan Besar, Gay World Park was hustling and bustling with nightlife during the 1930s to 1960s.  These amusement parks were especially popular among Singaporeans as it was the locals only form of entertainment, before television or shopping malls were introduced.  Gay World Park was an all-in-one complex, where visitors were offered a wide range of entertainment, from movies to shopping and games.  However, as its popularity began to dip in the 1970s, Gay World Park was eventually demolished in 2000 to make way for residential estates.  This officially marked the end of Gay World Park and its journey in the entertainment industry.

Amusement park accidents: Amusement park accidents refer to serious injuries or deaths that occur at amusement parks.  Many such accidents are reported to regulatory authorities as usually required by law everywhere.  The US Consumer Product Safety Commission tracks statistics for all amusement ride accidents.  Accidents listed here are caused by one of the following:

Zeitgeist (film series): Zeitgeist is a series of three documentary films released between 2007 and 2011 that present a number of conspiracy theories, as well as proposals for broad social and economic changes.

Kennywood: Kennywood is an amusement park located in West Mifflin, Pennsylvania.  The park first opened as a "trolley park" attraction at the end of the Mellon family's Monongahela Street Railway on May 30, 1899.  It was purchased in 1906 by F. W. Henninger and Andrew McSwigan who later formed the Kennywood Entertainment Company, which owned and operated the park as a closely held family business for over 100 years.  Kennywood was purchased by California-based Palace Entertainment in 2007.  The amusement park features various structures and rides dating back to the early 1900s.  Along with Rye Playland Park, it is one of only two amusement parks designated a National Historic Landmark for its history and historic rides.

Supporting paragraphs: Zeitgeist (film series) Great Old Amusement Parks
Answer: Zeitgeist