Complex sentence: The South Park Book Depository where Mr. Garrison tries to shoot Kathie Lee Gifford is never featured in another "South Park" episode; the building was inspired by the Texas School Book Depository, from which Lee Harvey Oswald shot John F. Kennedy.
Split into simpler sentences: The South Park Book Depository where Mr. Garrison tries to shoot Kathie Lee Gifford is never featured in another "South Park" episode. The building was inspired by the Texas School Book Depository, from which Lee Harvey Oswald shot John F. Kennedy.