Complex sentence: In "Le Morte D'Arthur" this king receives Excalibur three time: once from the stone, once from the unidentified Lady of the Lake, and once in a battle from Nyneve.
Split into simpler sentences: In "Le Morte D'Arthur" this king receives Excalibur three times. Once from the stone, once from the unidentified Lady of the Lake and once in a battle from Nyneve.