SeaWorld Orlando
SeaWorld Orlando is a theme park and marine zoological park, located in Orlando, Florida.
 It is owned and operated by SeaWorld Parks & Entertainment.
 When combined with its neighbor Discovery Cove and Aquatica, it forms SeaWorld Parks and Resorts Orlando, an entertainment complex consisting of the three parks and many neighboring hotels.
 In 2016, SeaWorld Orlando hosted an estimated 4,402,000 guests, ranking it the tenth most visited amusement park in the United States and twenty-fifth worldwide.
Six Flags
Six Flags, officially Six Flags Entertainment Corporation, is an amusement park corporation based in the United States, with properties in the US, Canada, and Mexico.
 It is the largest amusement park company in the world, based on the number of properties owned, and is ranked sixth in terms of attendance.
 The company maintains twenty properties throughout North America including theme parks, thrill parks, water parks, and family entertainment centers.
 In 2016, Six Flags properties hosted over 30.1 million guests.
Family entertainment center
A family entertainment center (or centre), often abbreviated FEC in the entertainment industry, (also known as indoor amusement park or indoor theme park) is a small amusement park marketed towards families with small children to teenagers, and often entirely indoors or associated with a larger operation such as a theme park.
 They usually cater to "sub-regional markets of larger metropolitan areas."
 FECs are generally small compared to full-scale amusement parks, with fewer attractions, a lower per-person per-hour cost to consumers than a traditional amusement park, and not usually major tourist attractions, but sustained by an area customer base.
 Many are locally owned and operated, although there are a number of chains and franchises in the field.
 FECs are sometimes called family amusement centers, play zones, family fun centers, or simply fun centers.
 Some non-traditional FECs, called urban entertainment centers (UECs), with more customized and branded attractions and retail outlets, are associated with major entertainment companies and may be tourist destinations.
 Others, sometimes operated by Non-Profit organizations as Children's Museums or Science Centers, tend to be geared toward edutainment experiences rather than simply amusement.
 FECs may also be adjuncts to full-scale amusement parks.
Amusement park
An amusement park is a park that features various attractions, such as rides and games, as well as other events for entertainment purposes.
 A theme park is a type of amusement park that bases its structures and attractions around a central theme, often featuring multiple areas with different themes.
 Unlike temporary and mobile funfairs and carnivals, amusement parks are stationary and built for long-lasting operation.
 They are more elaborate than city parks and playgrounds, usually providing attractions that cater to a variety of age groups.
 While amusement parks often contain themed areas, theme parks place a heavier focus with more intricately-designed themes that revolve around a particular subject or group of subjects.
Castle Park (amusement park)
Castle Park, formerly Castle Amusement Park, is a 25-acre amusement park and family amusement center located in Riverside, California.
 The park utilizes a medieval "castle" theme and includes attractions such as a miniature golf course, arcade, and 27 amusement rides including three roller coasters such as "Merlin's Revenge", a junior rollercoaster, "Screamin' Demon" a spinning Wild Mouse rollercoaster, and "Little Dipper", a children's rollercoaster.
 The main "castle" themed building, houses the arcade as well as its only dark ride; "Ghost Blasters", an interactive attraction, designed by Sally Corporation, which can also be found at other amusement parks throughout North America.
 The park was designed, built and operated by Bud Hurlbut, who designed several rides at Knott's Berry Farm.
 Castle Park is currently owned and operated by Palace Entertainment.
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.
Animal theme park
An animal theme park, also known as a zoological theme park, is a combination of a theme park and a zoological park, mainly for entertainment, amusement, and commercial purposes.
 Many animal theme parks combine classic theme park elements, such as themed entertainment and amusement rides, with classic zoo elements such as live animals confined within enclosures for display.
 Many times, live animals are utilized and featured as part of amusement rides and attractions found at animal theme parks.
Mind Eraser
The Mind Eraser is a steel inverted roller coaster at four different Six Flags and CNL theme parks.
 Built by Vekoma, they are of the most common and standard Suspended Looping Coaster model that is found in many theme parks; at least fifteen other parks around the world have exactly the same ride under other names.
 The Mind Eraser was introduced in 1995 and was one of the first suspended looping coasters built in the world.

Question: Discover Cove is owned and operated by a family entertainment, amusement park, and attraction company that operates how many theme parks?
Answer: seven