Sentence 1: On Marth 's death in 1897 he was replaced by Frederick William Henckel , who ran the observatory until Cooper 's death in 1902 .
Sentence 2: He was replaced as Marth 's death in 1897 by Frederick William Henckel , who headed the observatory until Cooper 's death in 1902 .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?