How many clubs have a try bonus value of 5?
{'header': ['Club', 'Played', 'Won', 'Drawn', 'Lost', 'Points for', 'Points against', 'Tries for', 'Tries against', 'Try bonus', 'Losing bonus', 'Points'], 'page_title': 'WRU Division Four South West', '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'], ['Aberavon Green Stars RFC', '22', '20', '0', '2', '760', '252', '115', '31', '16', '0', '96'], ['Taibach RFC', '22', '17', '0', '5', '585', '339', '70', '49', '10', '1', '79'], ['Vardre RFC', '22', '14', '0', '8', '536', '337', '66', '43', '8', '6', '70'], ['Pyle RFC', '22', '14', '0', '8', '469', '339', '69', '43', '8', '2', '66'], ['Pontardawe RFC', '22', '14', '0', '8', '521', '439', '64', '56', '5', '3', '64'], ['Glyncorrwg RFC', '22', '13', '0', '9', '446', '396', '64', '43', '8', '3', '63'], ['Abercrave RFC', '22', '9', '0', '13', '445', '451', '58', '56', '6', '7', '49'], ['Ystradgynlais RFC', '22', '8', '0', '14', '357', '506', '46', '67', '6', '6', '44'], ['Maesteg Celtic RFC', '22', '8', '1', '13', '389', '524', '47', '66', '3', '4', '41'], ['Porthcawl RFC', '22', '7', '2', '13', '342', '638', '38', '90', '3', '3', '38'], ['Tonna RFC', '22', '3', '1', '18', '340', '645', '40', '92', '3', '5', '22'], ['Resolven RFC', '22', '3', '0', '19', '254', '578', '34', '75', '2', '6', '20']]}