Complex sentence: However, elements of Belleforest's version do appear in Shakespeare's play but are not in Saxo's story, so whether Shakespeare took these from Belleforest directly or through the "Ur-Hamlet" remains unclear.
Split into simpler sentences: However, elements of Belleforest's version do appear in Shakespeare's play but are not in Saxo's story. Whether Shakespeare took these from Belleforest directly or through the "Ur-Hamlet" remains unclear.