Sentence 1: In 1999 , Abdelaziz Bouteflika , who supported the independence of the Western Sahara , was also president of Algeria .
Sentence 2: Also in 1999 , Abdelaziz Bouteflika , who supported the independence of Western Sahara , became president of Algeria .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?