Complex sentence: In the article she acknowledges that Muhammad existed as a historical figure and that the Quran represents "utterances" of his that he believed to be revelations, however she states that the Quran may not be complete record of the revelations.
Split into simpler sentences: In the article she acknowledges that Muhammad existed as a historical figure and that the Quran represents "utterances" of his that he believed to be revelations. However she states that the Quran may not be the complete record of the revelations.