Question: who has the most yards per carry in nfl history
[{'answer': 'Emmitt Smith', 'provenance': [{'wikipedia_id': '8571883', 'title': 'List of National Football League career rushing yards leaders', 'start_paragraph_id': 1, 'start_character': 168, 'end_paragraph_id': 1, 'end_character': 180, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Jim Brown'}, {'provenance': [{'wikipedia_id': '8571883', 'title': 'List of National Football League career rushing yards leaders', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8187297815743653973}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8571883', 'title': 'List of National Football League career rushing yards leaders', 'section': 'Section::::Historical rushing yards leaders.\n', 'start_paragraph_id': 7, 'end_paragraph_id': 7, 'meta': {'evidence_span': ['Emmitt Smith', 'This is a list of National Football League running backs by total career rushing yards. This list includes all running backs who have rushed for at least 10,000 yards. Emmitt Smith has held the all-time rushing yards record since 2002. "Through end of season" "Through end of season" Eight players have been recognized as having held the career rushing yards record in the NFL. Since reliable yardage statistics were not recorded prior to 1932, the first NFL player recognized as the career leader in rushing yards was Cliff Battles, who played from 1932 to 1937 for the Boston Braves / Boston Redskins / Washington Redskins. He led the NFL with 576 yards in 1932 and held on to the record throughout his career. Emmitt Smith has held the record since surpassing Walter Payton\'s long-standing total in 2002.\rhighlight sentence(s) containing evidence, not only the answer']}}]}, {'provenance': [{'wikipedia_id': '16209769', 'title': 'Carry (gridiron football)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Emmitt Smith', 'In American football and Canadian football, a carry or rushing attempt is a statistical term equivalent to a single rushing play. The term is typically used in reference to "yards per carry", meaning yards per attempt rushing the ball. Although running backs are typically tasked with carrying the ball, any offensive player who performs a carry is known as a ball-carrier for that play, regardless of position. The yards gained on a carry are referred to as rushing yards. In the National Football League (NFL), Emmitt Smith holds the record for the most career carries, with 4,409. The current leader in yards-per-carry in NFL history with at least 750 carries is quarterback Michael Vick.', 'In American football and Canadian football, a carry or rushing attempt is a statistical term equivalent to a single rushing play. The term is typically used in reference to "yards per carry", meaning yards per attempt rushing the ball. Although running backs are typically tasked with carrying the ball, any offensive player who performs a carry is known as a ball-carrier for that play, regardless of position. The yards gained on a carry are referred to as rushing yards. In the National Football League (NFL), Emmitt Smith holds the record for the most career carries, with 4,409. The current leader in yards-per-carry in NFL history with at least 750 carries is quarterback Michael Vick.\rhighlight sentence(s) containing evidence, not only the answer']}}]}, {'provenance': [{'wikipedia_id': '8574210', 'title': 'List of National Football League career receiving yards leaders', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['In American football, yards gained on a forward pass play are credited to the receiver as receiving yards. In the National Football League (NFL), 48 players have gained at least 10,000 receiving yards in their career: all but four are wide receivers; the rest are tight ends. Wide receiver Jerry Rice is the NFL\'s all-time leader in receiving yards, with 22,895. He is the only player to surpass 17,000 yards. Larry Fitzgerald is the only active player nearing this milestone. "Through end of season', 'In American football, yards gained on a forward pass play are credited to the receiver as receiving yards. In the National Football League (NFL), 48 players have gained at least 10,000 receiving yards in their career: all but four are wide receivers; the rest are tight ends. Wide receiver Jerry Rice is the NFL\'s all-time leader in receiving yards, with 22,895. He is the only player to surpass 17,000 yards. Larry Fitzgerald is the only active player nearing this milestone. "Through end of season\rhighlight sentence(s) containing evidence, not only the answer']}}]}, {'provenance': [{'wikipedia_id': '8571883', 'title': 'List of National Football League career rushing yards leaders', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Emmitt Smith', 'This is a list of National Football League running backs by total career rushing yards. This list includes all running backs who have rushed for at least 10,000 yards. Emmitt Smith has held the all-time rushing yards record since 2002.', 'This is a list of National Football League running backs by total career rushing yards. This list includes all running backs who have rushed for at least 10,000 yards. Emmitt Smith has held the all-time rushing yards record since 2002.\rhighlight sentence(s) containing evidence, not only the answer']}}]}]