Question: how many episodes are in season 7 of pretty little liars
[{'answer': '20'}, {'provenance': [{'wikipedia_id': '49091814', 'title': 'Pretty Little Liars (season 7)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 547, 'bleu_score': 0.9796927878356411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12545856959256579553}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27047499', 'title': 'List of Pretty Little Liars episodes', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['After an initial order of 10 episodes, ABC Family ordered an additional 12 episodes for season one on June 28, 2010. The first season\'s "summer finale" aired on August 10, 2010, with the remaining 12 episodes began airing on January 3, 2011. On January 11, 2011, ABC Family picked up "Pretty Little Liars" for a second season of 24 episodes. It began airing on Tuesday, June 14, 2011. It was announced in June that a special Halloween-themed episode would air as part of ABC Family\'s "13 Nights of Halloween" line-up. This increased the episode count from 24 to 25. On November 29, 2011, ABC Family renewed the series for a third season, consisting of 24 episodes. On October 4, 2012, ABC Family renewed the series for a fourth season, consisting of 24 episodes. On March 26, 2013, ABC Family renewed the series for a fifth season. On January 7, 2014, showrunner I. Marlene King wrote on Twitter that season 5 will have 25 episodes, including a holiday-themed episode. On June 10, 2014, it was announced that the show was renewed for an additional 2 seasons. Season 6 will air in mid-2015, and season 7 will air in mid-2016. It was announced by I. Marlene King that the sixth and the seventh season will consist of 20 episodes each. It was announced on August 29, 2016, that the show would be ending after the seventh season, and that the second half of the season would begin airing April 18, 2017.', 'It was announced by I. Marlene King that the sixth and the seventh season will consist of 20 episodes each.', 'After an initial order of 10 episodes, ABC Family ordered an additional 12 episodes for season one on June 28, 2010. The first season\'s "summer finale" aired on August 10, 2010, with the remaining 12 episodes began airing on January 3, 2011. On January 11, 2011, ABC Family picked up "Pretty Little Liars" for a second season of 24 episodes. It began airing on Tuesday, June 14, 2011. It was announced in June that a special Halloween-themed episode would air as part of ABC Family\'s "13 Nights of Halloween" line-up. This increased the episode count from 24 to 25. On November 29, 2011, ABC Family renewed the series for a third season, consisting of 24 episodes. On October 4, 2012, ABC Family renewed the series for a fourth season, consisting of 24 episodes. On March 26, 2013, ABC Family renewed the series for a fifth season. On January 7, 2014, showrunner I. Marlene King wrote on Twitter that season 5 will have 25 episodes, including a holiday-themed episode. On June 10, 2014, it was announced that the show was renewed for an additional 2 seasons. Season 6 will air in mid-2015, and season 7 will air in mid-2016. It was announced by I. Marlene King that the sixth and the seventh season will consist of 20 episodes each. It was announced on August 29, 2016, that the show would be ending after the seventh season, and that the second half of the season would begin airing April 18, 2017.\rhighlight sentence(s) containing evidence, not only the answer']}}]}, {'provenance': [{'wikipedia_id': '45664219', 'title': 'Pretty Little Liars (season 6)', 'section': 'Section::::Production.:Development.\n', 'start_paragraph_id': 68, 'end_paragraph_id': 68, 'meta': {'evidence_span': ['A\' in the church\'s bell tower. The show was renewed for a sixth and seventh season on June 10, 2014, right before the season five premiere aired, making "Pretty Little Liars" ABC Family\'s longest running original series. The sixth and the seventh season will consist of 20 episodes each. Filming for season 6 began on March 24, 2015. It aired 10 episodes for the first half the season, which began airing on June 2, 2015. The table read for the premiere occurred on March 23, 2015, King began writing the mid-season finale, the "summer finale", which was titled "Game Over, Charles", on May 12, 2015.', 'The sixth and the seventh season will consist of 20 episodes each.']}}]}]