What is the maximum capacity of the Otkrytie Arena stadium?
{'header': ['Stadium', 'Capacity', 'City', 'Country', 'Tenant', 'Opening'], 'page_title': 'List of European stadiums by capacity', 'section_title': 'Under construction', 'caption': 'Under construction', 'rows': [['Nou Mestalla', '75000', 'Valencia', 'Spain', 'Valencia CF', '2014'], ['Gazprom Arena', '69501', 'Saint Petersburg', 'Russia', 'FC Zenit Saint Petersburg', '2015'], ['Baku Olympic Stadium', '68000', 'Baku', 'Azerbaijan', 'Azerbaijan national football team', '2015'], ['Estadio La Peineta', '67500', 'Madrid', 'Spain', 'Club Atlético de Madrid', '2015'], ['Ferenc Puskás Stadion', '65000', 'Budapest', 'Hungary', 'Hungary national football team', '2016'], ['Stade des Lumières', '61556', 'Lyon', 'France', 'Olympique Lyonnais', '2014'], ['Northumberland Development Project', '56250', 'London', 'England', 'Tottenham Hotspur', '2016'], ['Fisht Olympic Stadium', '47659', 'Sochi', 'Russia', '2014 Winter Olympics 2014 Winter Paralympics', '2014'], ['Arena Baltika', '45015', 'Kaliningrad', 'Russia', 'FC Baltika Kaliningrad', '2017'], ['Yubileyniy Stadium', '45015', 'Saransk', 'Russia', 'FC Mordovia Saransk', '2015'], ['VTB Arena', '45000', 'Moscow', 'Russia', 'FC Dynamo Moscow', '2016'], ['Samara Stadium', '44918', 'Samara', 'Russia', 'FC Krylia Sovetov Samara', '2017'], ['Arena Baltika', '44899', 'Kaliningrad', 'Russia', 'FC Volga Nizhny Novgorod', '2017'], ['Otkrytie Arena', '44000', 'Moscow', 'Russia', 'FC Spartak Moscow', '2014'], ['Timsah Arena', '43877', 'Bursa', 'Turkey', 'Bursaspor', '2014'], ['Rostov-on-Don Stadium', '43702', 'Rostov-on-Don', 'Russia', 'FC Rostov', '2015'], ['New Konya Stadium', '42276', 'Konya', 'Turkey', 'Konyaspor', '2014'], ['Beşiktaş Vodafone Arena', '41903', 'Istanbul', 'Turkey', 'Beşiktaş', '2014'], ['New Trabzon Stadium', '41565', 'Trabzon', 'Turkey', 'Trabzonspor', '2016'], ['New Samsun 19 Mayıs Stadium', '33919', 'Samsun', 'Turkey', 'Samsunspor', '2015'], ['Stadion Widzewa', '33128', 'Łódź', 'Poland', 'Widzew Łódź', '2013'], ['New Antalya Stadium', '33000', 'Antalya', 'Turkey', 'Antalyaspor', '2015'], ['New Eskişehir Stadium', '33000', 'Eskişehir', 'Turkey', 'Eskişehirspor', '2015'], ['New Gaziantep Stadium', '33000', 'Gaziantep', 'Turkey', 'Gaziantepspor', '2015'], ['Ernest Pohl Stadium', '32340', 'Zabrze', 'Poland', 'Górnik Zabrze', '2013'], ['Sammy Ofer Stadium', '30820', 'Haifa', 'Israel', 'Maccabi Haifa F.C.', '2014'], ['VTB Arena', '30000', 'Moscow', 'Russia', 'FC Dynamo Moscow', '2017'], ['Batumi Stadium', '30000', 'Batumi', 'Georgia', 'FC Dinamo Batumi', '2013'], ['New Varna Stadium', '30000', 'Varna', 'Bulgaria', 'PFC Cherno More Varna', '2013'], ['CSKA Moscow Stadium', '30000', 'Moscow', 'Russia', 'PFC CSKA Moscow', '2015'], ['New Mersin Stadium', '25534', 'Mersin', 'Turkey', 'Mersin İdmanyurdu SK', '2013'], ['Malatya Arena', '25000', 'Malatya', 'Turkey', 'Malatyaspor', '2015'], ['New Sakarya Stadium', '25000', 'Sakarya', 'Turkey', 'Sakaryaspor', '2015'], ['Sivas 4 Eylül Arena', '25000', 'Sivas', 'Turkey', 'Sivasspor', '2015'], ['Stadion Albert Flórián', '25000', 'Budapest', 'Hungary', 'Ferencvárosi TC', '2015'], ['City Arena', '25000', 'Trnava', 'Slovakia', 'FC Spartak Trnava', '2014'], ['Lithuania National Stadium', '25000', 'Vilnius', 'Lithuania', 'Lithuania national football team', '2016'], ['Debrecen Stadion', '25000', 'Debrecen', 'Hungary', 'Debreceni VSC', '2014']]}