What is referred to by 'at 73 sinhalese'?

What is associated with: at 70 years old in 2004 george brunstad became the oldest person to swim this waterway between… What is associated with: at 704 hauser st astoria queens this character died in her sleep from a stroke in 1980? Based on the clue 'at 70ish calories this incredible edible packs a l...', what is the answer? What is associated with: at 7242 feet harney peak is the highest point in these south dakota hills? What is associated with: at 7310 feet mount kosciusko is the highest peak on this continent? What is associated with: at 7339 feet mount orohena on this island is the highest point in the society islands? What is associated with: at 74 years of age this 1930s 40s movie companion of tarzan is the worlds oldest living chimp? Based on the clue 'at 75 to 100 pounds this largest south american ro...', what is the answer?