Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: An elderly man who shot his paralyzed wife in the chest while she was asleep in a hospital bed did so with 'no evil', a district attorney has said. William Dresser, 88, walked into the rehab unit of Carson Tahoe Regional Medical Center, Nevada, and killed wife Frances, 86, with a pistol in January last year after she begged to die. Carson City District Attorney Jason Woodbury has now filed a motion to dismiss the murder charge against Dresser. The prosecutor, who took office a year after the shooting occurred, cited evidence that Mrs Dresser had expressed a desire to no longer live.William and Frances Dresser had been married for 68 yearsShe 'begged' him to end her life after a fall left her paralyzed and in painHe bought a handgun, kissed her while she slept - then shot her in chest 
 Question:And he pointed to the fact that _ is suffering from advanced-stage prostate cancer.

William Dresser