Name the number of last appearance where team is san francisco 49ers
{'header': ['Num', 'Team', 'W', 'L', 'PCT', 'PF', 'PA', 'Last appearance', 'Last championship', 'HOME games', 'Home wins', 'Home losses', 'Home Win Pct.', 'ROAD games', 'Road wins', 'Road losses', 'Road Win Pct.'], 'page_title': 'NFC Championship Game', 'section_title': 'NFC Championship Game appearances 1970–present', 'caption': 'NFC Championship Game appearances 1970–present', 'rows': [['14', 'Dallas Cowboys', '8', '6', '.571', '317', '264', '1995', '1995', '5', '4', '1', '.800', '9', '4', '5', '.444'], ['14', 'San Francisco 49ers', '6', '8', '.429', '269', '242', '2012', '2012', '9', '4', '5', '.444', '5', '2', '3', '.400'], ['9', 'Los Angeles/ St. Louis Rams', '3', '6', '.333', '82', '187', '2001', '2001', '4', '2', '2', '.500', '5', '1', '4', '.200'], ['8', 'Minnesota Vikings', '3', '5', '.375', '136', '175', '2009', '1976', '3', '2', '1', '.667', '5', '1', '4', '.200'], ['6', 'Washington Redskins', '5', '1', '.833', '139', '78', '1991', '1991', '5', '5', '0', '1.000', '1', '0', '1', '.000'], ['6', 'Philadelphia Eagles', '2', '4', '.333', '109', '119', '2008', '2004', '4', '2', '2', '.500', '2', '0', '2', '.000'], ['5', 'New York Giants', '5', '0', '1.000', '116', '50', '2011', '2011', '2', '2', '0', '1.000', '3', '3', '0', '1.000'], ['5', 'Green Bay Packers', '3', '2', '.600', '121', '98', '2010', '2010', '2', '1', '1', '.500', '3', '2', '1', '.667'], ['5', 'Chicago Bears', '2', '3', '.400', '80', '86', '2010', '2006', '4', '2', '2', '.500', '1', '0', '1', '.000'], ['3', 'Atlanta Falcons', '1', '2', '.333', '64', '82', '2012', '1998', '1', '0', '1', '.000', '2', '1', '1', '.500'], ['3', 'Carolina Panthers', '1', '2', '.333', '41', '67', '2005', '2003', '0', '0', '0', '—–', '3', '1', '2', '.333'], ['3', 'Tampa Bay Buccaneers', '1', '2', '.333', '33', '30', '2002', '2002', '1', '0', '1', '.000', '2', '1', '1', '.500'], ['2', 'New Orleans Saints', '1', '1', '.500', '45', '67', '2009', '2009', '1', '1', '0', '1.000', '1', '0', '1', '.000'], ['1', 'Arizona Cardinals', '1', '0', '1.000', '32', '25', '2008', '2008', '1', '1', '0', '1.000', '0', '0', '0', '—–'], ['1', 'Seattle Seahawks b[› ]', '1', '0', '1.000', '34', '14', '2005', '2005', '1', '1', '0', '1.000', '0', '0', '0', '—–']]}