Complex sentence: The Gustav-Siewerth Academy was founded in 1988 under private ownership, legal and financial support is a non-profit limited liability company (Gustav-Siewerth House gGmbH).
Split into simpler sentences: The Gustav-Siewerth Academy was founded in 1988 under private ownership. Legal and financial support is provided by a non-profit limited liability company (Gustav-Siewerth House gGmbH).