Complex sentence: The Woodward effect is based on the relativistic effects theoretically derived from Mach's Principle on inertia within general relativity and is attributed by Albert Einstein to Ernst Mach.
Split into simpler sentences: The Woodward effect is based on the relativistic effects theoretically derived from Mach's Principle within general relativity. The Mach conjecture on inertia is attributed by Albert Einstein to Ernst Mach.