Complex sentence: After a malignant tumor in his throat took his voice, he attempted suicide by jumping from the top floor of the hospital, witnessed by Dr. Wakaoji; he remained in a coma for the next two years.
Split into simpler sentences: After a malignant tumor in his throat took his voice, he attempted suicide by jumping from the top floor of the hospital, witnessed by Dr. Wakaoji. He remained in a coma for the next two years.