What is the lowest group to earn 886.6 points?
{'header': ['Rank', 'Member Association', 'Points', 'Group stage', 'Play-off', 'AFC Cup'], 'page_title': '', 'section_title': '', 'caption': '', 'rows': [['1', 'Japan', '946.8', '4', '0', '0'], ['2', 'Korea Republic', '886.6', '4', '0', '0'], ['3', 'China PR', '796.7', '4', '0', '0'], ['4', 'Australia', '567.0', '1', '1', '0'], ['5', 'Thailand', '177.2', '1', '1', '0'], ['6', 'Singapore', '−135.1', '0', '0', '2'], ['7', 'Vietnam', '−815.7', '0', '0', '2']]}