Question: when did american idol end the first time
[{'answer': 'April 7 , 2016', 'provenance': [{'wikipedia_id': '191890', 'title': 'American Idol', 'start_paragraph_id': 122, 'start_character': 568, 'end_paragraph_id': 122, 'end_character': 582, 'bleu_score': 1.0, 'section': 'Section::::Series overview and season synopses.:2002–2016: Fox.:Season 15.\n'}]}, {'provenance': [{'wikipedia_id': '191890', 'title': 'American Idol', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 326, 'bleu_score': 0.6591958888064391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9829970309899272690}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '191890', 'title': 'American Idol', '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': 9829970309899272690}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '191890', 'title': 'American Idol', 'section': 'Section::::Series overview and season synopses.:2002–2016: Fox.:Season 15.\n', 'start_paragraph_id': 122, 'end_paragraph_id': 122, 'meta': {'evidence_span': ['Fox announced on May 11, 2015 that the fifteenth season would be the final season of "American Idol"; as such, the season was expected to have an additional focus on the program\'s alumni. Ryan Seacrest returned as host, with Harry Connick Jr., Keith Urban, and Jennifer Lopez all returning as judges. The season was shortened by four weeks compared to previous years. During the finale episode, President Barack Obama praised the millions of young people that voted for contestants and pitched that they vote in the upcoming election. The farewell season concluded on April 7, 2016. Seacrest signed off by saying: "And one more timethis is so toughwe say to you from Hollywood, goodnight America", and then he added, "for now."', 'The farewell season concluded on April 7, 2016. Seacrest signed off by saying: "And one more timethis is so toughwe say to you from Hollywood, goodnight America", and then he added, "for now."', 'The season was shortened by four weeks compared to previous years. During the finale episode, President Barack Obama praised the millions of young people that voted for contestants and pitched that they vote in the upcoming election. The farewell season concluded on April 7, 2016.']}}]}]