Sentence 1: Rafic Hariri ( born 1980-1981 ) is a Lebanese billionaire , heir and developer , the youngest son of Fahd Hariri .
Sentence 2: Rafic Hariri ( born 1980/1981 ) is a Lebanese billionaire heir and property developer , the youngest son of Fahd Hariri .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?