Name the nickname for enrollment being 9000
{'header': ['Institution', 'Location', 'Nickname', 'Founded', 'Type', 'Enrollment', 'Joined'], 'page_title': 'Little East Conference', 'section_title': 'Full members', 'caption': 'Full members', 'rows': [['Eastern Connecticut State University', 'Willimantic, Connecticut', 'Warriors', '1889', 'Public', '5113', '1986'], ['Keene State College', 'Keene, New Hampshire', 'Owls', '1909', 'Public', '6400', '1997'], ['Plymouth State University', 'Plymouth, New Hampshire', 'Panthers', '1871', 'Public', '5264', '1986'], ['Rhode Island College', 'Providence, Rhode Island', 'Anchormen', '1854', 'Public', '9000', '1986'], ['University of Massachusetts Boston', 'Boston, Massachusetts', 'Beacons', '1852', 'Public', '13433', '1986'], ['University of Massachusetts Dartmouth', 'Dartmouth, Massachusetts', 'Corsairs', '1895', 'Public', '7261', '1986'], ['University of Southern Maine', 'Gorham, Maine Lewiston, Maine Portland, Maine', 'Huskies', '1878', 'Public', '10974', '1986']]}