Premise: Battle of Bosworth Field . His opponent , Richard III , the last king of the House of York , was killed in the battle . Richard III of England . His defeat at Bosworth Field , the last decisive battle of the Wars of the Roses , marked the end of the Middle Ages in England . Henry 's force engaged Richard 's army and defeated it at the Battle of Bosworth Field in Leicestershire .
Hypothesis: Richard III of England died in the battle.
Label: ENTAILMENT