Historical clue formulations

• Org. for Martina Hingis and Martina Navratilova — 2026-09-01
• Sports grp. for Coco Gauff — 2026-01-20
• Sports org. founded by Billie Jean King — 2022-06-26
• Sports grp. founded by Billie Jean King — 2021-01-20
• Org. for Venus and Serena Williams — 2010-05-23