user: Question: Who has a mark of 6.17 in group B?
Columns: ['Rank', 'Group', 'Name', 'Nationality', 'Mark']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'B', 'Brittney Reese', 'United States', '6.87']
SQL:

assistant: SELECT "Name" FROM "Table" WHERE "Group" = 'B' AND "Mark" = '6.17';