user: Question: Which district has an IUCN of III and was established in 1998?
Columns: ['Reserve', 'District', 'IUCN', 'Co-management', 'Est.', 'Description']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Actun Tunichil Muknal', 'Cayo', 'Ia', 'Belize Audubon Society ; Institute of Archaeology', 2004.0, 'Terrestrial.']
SQL:

assistant: SELECT "District" FROM "Table" WHERE "IUCN" = 'III' AND "Est." = 1998.0;