user: Question: When the runner-up is listed as Gigi Fernández Natalia Zvereva and the week is 26 June 2 weeks, who are the semi finalists?
Columns: ['Week of', 'Tier', 'Winner', 'Runner-up', 'Semi finalists']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['12 June', 'Tier III', 'Zina Garrison-Jackson 6–3, 6–3', 'Lori McNeil', 'Elna Reinach Els Callens']
SQL:

assistant: SELECT "Semi finalists" FROM "Table" WHERE "Runner-up" = 'Gigi Fernández Natalia Zvereva' AND "Week of" = '26 June 2 weeks';