Question: what nfl coach has the most wins ever
[{'answer': 'Don Shula', 'provenance': [{'wikipedia_id': '41018355', 'title': 'List of National Football League head coaches with 50 wins', 'start_paragraph_id': 2, 'start_character': 18, 'end_paragraph_id': 2, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Shula , Don'}, {'provenance': [{'wikipedia_id': '53443564', 'title': 'Associated Press NFL Coach of the Year Award', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The Associated Press National Football League Coach of the Year Award is presented annually by the Associated Press (AP) to the National Football League (NFL) coach adjudged to have had the most outstanding season. It has been awarded since the 1957 season. Since 2011, the winner has been announced at the annual NFL Honors ceremony held the day before the Super Bowl. Don Shula has won the most AP NFL Coach of the Year awards, receiving four during his 33-year head coaching career: three with the Baltimore Colts and one', 'Don Shula has won the most AP NFL Coach of the Year awards, receiving four during his 33-year head coaching career: three with the Baltimore Colts and one']}}]}, {'provenance': [{'wikipedia_id': '41018355', 'title': 'List of National Football League head coaches with 50 wins', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['Former head coach Don Shula holds the records for most wins with 347 and the most regular season wins with 328. Prior to Shula, the records for most wins and regular season wins were held by Chicago Bears founder George Halas with 318 and 324, which are the most with a single franchise. As of the third round of the 2018 NFL postseason, Bill Belichick has the most wins and regular season wins among active head coaches with 291 and 261 and holds the record for most playoff wins at 30.\rhighlight sentence(s) containing evidence, not only the answer', 'Former head coach Don Shula holds the records for most wins with 347 and the most regular season wins with 328. Prior to Shula, the records for most wins and regular season wins were held by Chicago Bears founder George Halas with 318 and 324, which are the most with a single franchise.', 'Former head coach Don Shula holds the records for most wins with 347 and the most regular season wins with 328.']}}]}]