user: Question: What is the League Cup value for 1991–present?
Columns: ['Name', 'Years', 'League', 'FA Cup', 'League Cup', 'Europe', 'Other [C ]', 'Total']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Bobby Charlton', '1956–1973', '199 (606)', '0 19 0 (78)', '00 7 0 (24)', '0 22 0 (45)', '00 2 00 (5)', '249 (758)']
SQL:

assistant: SELECT "League Cup" FROM "Table" WHERE "Years" = '1991–present';