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