Complex sentence: The opera is loosely based on the life of Mohandas K. Gandhi, and is the second part of Glass's "Portrait Trilogy" of operas about men who changed the world, which also includes "Einstein on the Beach" and "Akhnaten".
Split into simpler sentences: The opera is loosely based on the life of Mohandas K. Gandhi. It is the second part of a trilogy of operas, his "Portrait Trilogy," which also includes "Einstein on the Beach" and "Akhnaten".