Complex sentence: Dr. Quymn then takes Dr. Venture up to a tree, where she shows him a fruit called "Solomon's Heart", of which she claims that the seeds of the fruit contain antigens that can cure cancer.
Split into simpler sentences: Dr. Quymn then takes Dr. Venture up to a tree, where she shows him a fruit called "Solomon's Heart". She claims that the seeds of the fruit contain antigens that can cure cancer.