Sentence 1: Mark Twain ( 11 August 1798 – 24 March 1847 ) was the father of the author John Marshall Clemens .
Sentence 2: Mark Twain ( August 11 , 1798 -- March 24 , 1847 ) was the father of author John Marshall Clemens .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?