user: Question: Which tier has a division of LEB 2 and Cup Competitions of Copa LEB Plata runner-up?
Columns: ['Season', 'Tier', 'Division', 'Pos.', 'Postseason', 'Cup Competitions']
Types: ['text', 'real', 'text', 'real', 'text', 'text']
Sample row: ['1998–99', 3.0, 'Liga EBA', 8.0, '–', '–']
SQL:

assistant: SELECT "Tier" FROM "Table" WHERE "Division" = 'LEB 2' AND "Cup Competitions" = 'Copa LEB Plata runner-up';