what's the tries against with tries for being 47
{'header': ['Club', 'Played', 'Won', 'Drawn', 'Lost', 'Points for', 'Points against', 'Tries for', 'Tries against', 'Try bonus', 'Losing bonus', 'Points'], 'page_title': 'WRU Division Two West', 'page_id': '', 'types': ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text'], 'id': '1-12828723-3', 'section_title': '2009/2010 table', 'caption': '2009/2010 table', 'rows': [['Club', 'Played', 'Won', 'Drawn', 'Lost', 'Points for', 'Points against', 'Tries for', 'Tries against', 'Try bonus', 'Losing bonus', 'Points'], ['Maesteg RFC', '22', '19', '2', '1', '615', '271', '78', '24', '12', '0', '92'], ['Waunarlwydd RFC', '22', '14', '1', '7', '594', '359', '73', '38', '10', '5', '73'], ['BP Llandarcy RFC', '22', '14', '1', '7', '376', '320', '43', '36', '3', '5', '66'], ['Kidwelly RFC', '22', '13', '0', '9', '558', '393', '68', '39', '6', '6', '64'], ['Aberavon Quins RFC', '22', '13', '0', '9', '449', '424', '56', '45', '6', '3', '61'], ['Ammanford RFC', '22', '11', '1', '10', '409', '348', '45', '33', '4', '8', '58'], ['Loughor RFC', '22', '10', '1', '11', '427', '479', '47', '60', '5', '4', '51'], ['Aberystwyth RFC', '22', '10', '0', '12', '390', '509', '46', '71', '5', '4', '49'], ['Pontyberem RFC', '22', '10', '0', '12', '353', '520', '35', '67', '4', '3', '47'], ['Mumbles RFC', '22', '7', '1', '14', '372', '471', '51', '55', '5', '4', '39'], ['Pencoed RFC', '22', '3', '0', '19', '321', '505', '34', '62', '0', '10', '22'], ['Dunvant RFC', '22', '4', '1', '17', '324', '589', '33', '79', '0', '2', '20']], 'name': 'table_12828723_3'}