Question: where was the movie i am number 4 filmed
[{'answer': 'the Pittsburgh metropolitan area', 'provenance': [{'wikipedia_id': '27588976', 'title': 'I Am Number Four (film)', 'start_paragraph_id': 49, 'start_character': 75, 'end_paragraph_id': 49, 'end_character': 107, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.\n'}]}, {'answer': '20 locations all within the Pittsburgh metropolitan area'}, {'provenance': [{'wikipedia_id': '27588976', 'title': 'I Am Number Four (film)', 'start_paragraph_id': 49, 'start_character': 0, 'end_paragraph_id': 49, 'end_character': 375, 'bleu_score': 0.96746874041754, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17026139245241557997}, 'section': 'Section::::Production.:Filming.\n'}]}, {'provenance': [{'wikipedia_id': '20827074', 'title': 'The 39 Steps (2008 film)', 'section': 'Section::::Production.:Locations.\n', 'start_paragraph_id': 17, 'end_paragraph_id': 17, 'meta': {'evidence_span': ['Filming took place on location in Scotland. Locations used included the area around West Register Street in Edinburgh for the London scenes at the start of the film, Bo\'ness railway station, Kelvingrove Art Gallery and Museum for the interior scenes of St Pancras railway station, Glasgow City Chambers, Culross, Stirling Castle, Dumbarton Castle, the highlands of Argyll and Loch Katrine, used for the finale. The production was shot using 35\xa0mm film rather than high-definition cameras. Hawes told Matthew Bell of "Broadcast" that: Film is absolutely', 'Filming took place on location in Scotland. Locations used included the area around West Register Street in Edinburgh for the London scenes at the start of the film, Bo\'ness railway station, Kelvingrove Art Gallery and Museum for the interior scenes of St Pancras railway station, Glasgow City Chambers, Culross, Stirling Castle, Dumbarton Castle, the highlands of Argyll and Loch Katrine, used for the finale. The production was shot using 35\xa0mm film rather than high-definition cameras. Hawes told Matthew Bell of "Broadcast" that: Film is absolutely']}}]}, {'provenance': [{'wikipedia_id': '27588976', 'title': 'I Am Number Four (film)', 'section': 'Section::::Production.:Filming.\n', 'start_paragraph_id': 51, 'end_paragraph_id': 51, 'meta': {'evidence_span': ['Vandergrift as the "hero town" of the film because of its unique look and curved streets, laid out by Frederick Law Olmsted, the designer of New York City\'s Central Park. Franklin Regional High School in Murrysville was chosen over 50 other schools in the area, due to its proximity to nearby woods, a part of the film\'s plot, and its surrounding hills. The school was also selected for its one floor layout, wide hallways, and its football stadium in front. Teachers and recent graduates appear in the film, and a set that replicates the school was built in a studio in Monroeville for filming explosion scenes. In the last few weeks of production, scenes were filmed at the 200-year-old St. John\'s Lutheran Stone Church in Lancaster Township. Additional filming took place in the Florida Keys in the beginning of the film in Big Pine Key, Florida as well as the spanning of the drive over the bridge showcases the keys 7 mile bridge.', 'Vandergrift as the "hero town" of the film because of its unique look and curved streets, laid out by Frederick Law Olmsted, the designer of New York City\'s Central Park. Franklin Regional High School in Murrysville was chosen over 50 other schools in the area, due to its proximity to nearby woods, a part of the film\'s plot, and its surrounding hills.']}}]}, {'provenance': [{'wikipedia_id': '27588976', 'title': 'I Am Number Four (film)', 'section': 'Section::::Production.:Filming.\n', 'start_paragraph_id': 49, 'end_paragraph_id': 49, 'meta': {'evidence_span': ['the Pittsburgh metropolitan area', 'Principal photography began on May 17, 2010, using 20 locations all within the Pittsburgh metropolitan area. DreamWorks selected the area primarily due to tax incentives from the Pennsylvania Film Production Tax Credit. The film studio also had a positive experience shooting "She\'s Out of My League" in Pittsburgh in 2008. The production was scheduled to last 12 to 13 weeks.', 'Principal photography began on May 17, 2010, using 20 locations all within the Pittsburgh metropolitan area. DreamWorks selected the area primarily due to tax incentives from the Pennsylvania Film Production Tax Credit. The film studio also had a positive experience shooting "She\'s Out of My League" in Pittsburgh in 2008. The production was scheduled to last 12 to 13 weeks.']}}]}]