Special ability is a very broad term from sports, sciences, arts, technology, business or any specific field.
In general an ability may or may not require a degree but will have to be recognized by other individuals or organizations in that field.
Example: An Airline Pilot can have an internationally recognized special ability.
An artist that has exhibited his artwork publicly can be deemed a local, national, or international special ability artist.
A web or application developer can be a person that through his work have an internationally recognized special ability.
A business professional may have represented a company to achieve significant objectives and thus posses a local, national, or international special ability.
Describe as much as you can what you are interested in accomplishing such as relocating to US, investing, professional visa, temporary work, study, etc. Give as much detail as we can so we can get a general idea.