Question: how many games does a team have to win for the world series
[{'answer': 'best - of - seven', 'provenance': [{'wikipedia_id': '23489161', 'title': 'World Series', 'start_paragraph_id': 65, 'start_character': 616, 'end_paragraph_id': 65, 'end_character': 634, 'bleu_score': 1.0, 'section': 'Section::::Modern World Series (1903–present).:1990s.:1994: League Division Series.\n'}]}, {'provenance': [{'wikipedia_id': '23489161', 'title': 'World Series', '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': 11880605672170693017}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23489161', 'title': 'World Series', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 474, 'bleu_score': 0.9748377259086851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11880605672170693017}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23489161', 'title': 'World Series', 'section': 'Section::::Modern World Series (1903–present).:1990s.:1994: League Division Series.\n', 'start_paragraph_id': 65, 'end_paragraph_id': 65, 'meta': {'evidence_span': ['In 1994, each league was restructured into three divisions, with the three division winners and the newly introduced wild card winner advancing to a best-of-five playoff round (the "division series"), the National League Division Series (NLDS) and American League Division Series (ALDS). The team with the best league record is matched against the wild card team, unless they are in the same division, in which case, the team with the second-best record plays against the wild card winner. The remaining two division winners are pitted against each other. The winners of the series in the first round advance to the best-of-seven NLCS and ALCS. Due to a players\' strike, however, the NLDS and ALDS were not played until 1995. Beginning in 1998, home field advantage was given to the team with the better regular season record, with the exception that the Wild Card team cannot get home-field advantage.', "The winners of the series in the first round advance to the best-of-seven NLCS and ALCS. Due to a players' strike, however, the NLDS and ALDS were not played until 1995", 'The winners of the series in the first round advance to the best-of-seven NLCS and ALCS.']}}]}, {'provenance': [{'wikipedia_id': '23489161', 'title': 'World Series', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ["The World Series is the annual championship series of Major League Baseball (MLB) in North America, contested since 1903 between the American League (AL) champion team and the National League (NL) champion team. The winner of the World Series championship is determined through a best-of-seven playoff, and the winning team is awarded the Commissioner's Trophy. As the series is played during the fall season in North America, it is sometimes referred to as the Fall Classic. Prior to 1969, the team with", "The winner of the World Series championship is determined through a best-of-seven playoff, and the winning team is awarded the Commissioner's Trophy", "The winner of the World Series championship is determined through a best-of-seven playoff, and the winning team is awarded the Commissioner's Trophy."]}}]}]