Question: What nationality was the woman who was first-seeded and won the singles title in The 1997 Porsche Tennis Grand Prix?
Sentence (from "Martina Hingis"): She has spent a total of 209 weeks as the singles No. 1 and has won five Grand Slam singles titles, thirteen Grand Slam women's doubles titles, winning a calendar-year doubles Grand Slam in 1998, and seven Grand Slam mixed doubles titles; for a combined total of twenty-five major titles.
Relevant evidence: No