Read this and answer the question. If the question is unanswerable, say "unanswerable".

Satyagraha, an opera by Philip Glass, uses texts from the Bhagavad Gita, sung in Sanskrit. The closing credits of The Matrix Revolutions has a prayer from the Brihadaranyaka Upanishad. The song "Cyber-raga" from Madonna's album Music includes Sanskrit chants, and Shanti/Ashtangi from her 1998 album Ray of Light, which won a Grammy, is the ashtanga vinyasa yoga chant. The lyrics include the mantra Om shanti. Composer John Williams featured choirs singing in Sanskrit for Indiana Jones and the Temple of Doom and in Star Wars: Episode I – The Phantom Menace. The theme song of Battlestar Galactica 2004 is the Gayatri Mantra, taken from the Rigveda. The lyrics of "The Child In Us" by Enigma also contains Sanskrit verses.[better source needed].

What is the opera created by Steven Glass that uses Sanskrit?
unanswerable