Complex sentence: Ebert lived with cancer of the thyroid and salivary glands from 2002 that required treatments necessitating the removal of his lower jaw, which cost him the ability to speak or eat normally.
Split into simpler sentences: Ebert lived with cancer of the thyroid and salivary glands from 2002. This required treatments necessitating the removal of his lower jaw, which cost him the ability to speak or eat normally.