John Henry
Table:
John Henry
Sire	Ole Bob Bowers
Grandsire	Prince Blessed
Dam	Once Double
Damsire	Double Jay
Sex	Gelding
Foaled	March 9, 1975
Country	United States
Colour	Brown
Breeder	Golden Chance Farm
Owner	Dotsam Stable. Colors: Brown, powder blue hoop and bar on sleeves, brown and blue cap.
Trainer	Robert Donato
Lefty Nickerson
Ron McAnally
Record	83: 39-15-9
Earnings	$6,591,860

With reference to the table, judge whether the statement is entailed, neutral, or refuted according to the table. Provide the verdict inside {"answer": "YOUR ANSWER"} as JSON.

Hypothesis: John Henry was trained by only one man.

answer: refuted