Question: How many different kinds of taekwondo exist?
About the article "Taekwondo", section "Abstract".

Candidate passages:
Erzgebirgisch has many onomatopoetic verbs (see also I. Susanka).
Due to the high precipitation in the Ore Mountains, many different verbs for different kinds of rain or drizzle exist. 
Indianapolis is served by many different kinds of transportation. 
Two of the most popular systems of taekwondo are named solely after their respective organizations: the World Taekwondo Federation (WTF) and the International Taekwon-Do Federation (ITF).
The WTF was founded in 1973, with roots in the KTA.
The KTA Central Dojang opened in South Korea in 1972, and a few months later, the name was changed to Kukkiwon.
The following year, the WTF was formed.
The International Olympic Committee recognized the WTF and taekwondo sparring in 1980.
Although the terms "WTF" and "Kukkiwon" are often mistakenly used interchangeably, Kukkiwon is a completely different organization which trains and certifies instructors, and issues official "dan" and "poom" certificates worldwide.
Kukkiwon has its own unique physical building that contains the administrative offices of Kukkiwon (World Taekwondo Headquarters) in Seoul, South Korea and is the system of taekwondo.
In contrast, the WTF is a tournament committee, and is not technically a style or a system.
The ITF was founded in 1966 by Choi Hong Hi as a splinter group from the KTA.
After Choi's death in 2002, a number of succession disputes splintered the ITF into three different groups, all claiming to be the original.
These three bodies are all private organizations.
Two are located in Austria and one in Canada.
The unofficial training headquarters of the ITF is located at the Taekwondo Palace in Pyongyang, North Korea, and was founded in the mid-1990s.
There are many other private organizations, such as the World Traditional Taekwondo Union and American Taekwondo Association which promotes the Songahm style of taekwondo, and Rhee Taekwon-Do which teached the military style of taekwondo.
Events and competitions held by private organizations are mostly closed to other taekwondo students.
However, the WTF-sanctioned events allow any person, regardless of school affiliation or martial arts style, to compete in WTF events as long as he or she is a member of the WTF Member National Association in his or her nation, which allows anyone to join.
The major technical differences among these many organizations revolve around the patterns (called "hyeong" 형, "poomsae" 품새, or "teul" 틀), which are sets of prescribed formal sequences of movements that demonstrate mastery of posture, positioning, and technique; differences in the sparring rules for competition; and martial arts philosophy.
In addition to these private organizations, the original schools ("kwans") that formed the organization that would eventually become Kukkiwon continue to exist as independent fraternal membership organizations that support the WTF and Kukkiwon.
The official curriculum of the "kwans" is that of Kukkiwon.
The "kwans" also function as a channel for the issuing of Kukkiwon "dan" and "poom" certification (black belt ranks) for their members. 
Any risk that can be quantified can potentially be insured.
Specific kinds of risk that may give rise to claims are known as perils.
An insurance policy will set out in detail which perils are covered by the policy and which are not.
Below are non-exhaustive lists of the many different types of insurance that exist.
A single policy may cover risks in one or more of the categories set out below.
For example, vehicle insurance would typically cover both the property risk (theft or damage to the vehicle) and the liability risk (legal claims arising from an accident).
A home insurance policy in the United States typically includes coverage for damage to the home and the owner's belongings, certain legal claims against the owner, and even a small amount of coverage for medical expenses of guests who are injured on the owner's property.
Business insurance can take a number of different forms, such as the various kinds of professional liability insurance, also called professional indemnity (PI), which are discussed below under that name; and the business owner's policy (BOP), which packages into one policy many of the kinds of coverage that a business owner needs, in a way analogous to how homeowners' insurance packages the coverages that a homeowner needs. 
Educational Objective: Viewers will learn how different kinds of eyes help animals see in different ways.
Summary: A game of "I Spy" shows that Izzy’s eyesight is better than the other Explorers.
This realization gets the gang wondering how different kinds of eyes help animals see in different ways.