Question: Who was born earlier, Maria Guimarães or Peter Francis Martin?
Sentence (from "Maria Guimarães"): At 15 years old, she participated at the inaugural World Aquatics Championships in 1973 Belgrade, where she finished 10th in the 400- metre freestyle, 12th in the 800- metre freestyle, and 15th in the 200- metre freestyle.
Relevant evidence: No