premise: Donald F. Gleason (November 20, 1920 – December 28, 2008) was an American physician and pathologist, best known for devising the "Gleason score" which predicts the aggressiveness of prostate cancer in patients. He was a former chief of pathology at the Minneapolis VA Medical Center, and received three degrees from and taught at the University of Minnesota.
hypothesis: Donald Gleason's middle name was Muller.
reason: This statement is definitely incorrect because Donald Gleason's middle name starts with an "F." However, the system probably doesn't know the concept "middle name" or it didn't know that the "F." is used an initial for his middle name, so it couldn't figure this out.