Question: how long has tom brady been the patriots quarterback
[{'answer': '2001', 'provenance': [{'wikipedia_id': '339841', 'title': 'Tom Brady', 'start_paragraph_id': 23, 'start_character': 389, 'end_paragraph_id': 23, 'end_character': 393, 'bleu_score': 1.0, 'section': 'Section::::Professional career.:Overview.\n'}]}, {'answer': '16 seasons'}, {'provenance': [{'wikipedia_id': '339841', 'title': 'Tom Brady', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 389, 'bleu_score': 0.5405684168832471, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7971494135775421787}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '339841', 'title': 'Tom Brady', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 845, 'bleu_score': 0.750101493833893, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7971494135775421787}, 'section': 'Section::::Professional career.:Overview.\n'}]}, {'provenance': [{'wikipedia_id': '339841', 'title': 'Tom Brady', 'section': 'Section::::Professional career.:Overview.\n', 'start_paragraph_id': 23, 'end_paragraph_id': 23, 'meta': {'evidence_span': ['Brady was selected by the New England Patriots with the 199th overall pick in the sixth round of 2000 NFL Draft and has since spent his entire 19-season career with the Patriots.', 'A lightly regarded prospect coming out of college, Brady was selected by the New England Patriots with the 199th overall pick in the sixth round of 2000 NFL Draft and has since spent his entire 19-season career with the Patriots.', "A lightly regarded prospect coming out of college, Brady was selected by the New England Patriots with the 199th overall pick in the sixth round of 2000 NFL Draft and has since spent his entire 19-season career with the Patriots. Brady's tenure with the Patriots is an NFL record for the longest time playing quarterback for one franchise. Since Brady became their starting quarterback in 2001, the Patriots have never had a losing season and have won 16 division titles. The Patriots played in thirteen AFC Championship Games from 2001 to 2018including eight in a row from 2011 to 2018and won nine of them. Brady and Patriots head coach Bill Belichick have combined to form the most successful quarterback-head coach tandem in NFL history, winning more regular season games and postseason games than any other such duo as well as appearing in nine Super Bowls. All of these events set new NFL records."]}}]}]