Premise: Muhammad Ali . In 1984 , Ali was diagnosed with Parkinson 's syndrome , which his doctors attributed to boxing-related brain injuries . Parkinson's disease . People with parkinsonism who have increased the public 's awareness of the condition include actor Michael J. Fox , Olympic cyclist Davis Phinney , and late professional boxer Muhammad Ali .
Hypothesis: Muhammad Ali is immune to Parkinson's disease.
Label: CONTRADICTION