Sentence 1: Demetrius headed the Bulgarian Patriarchate in the first years of the reign of emperor Peter I ( r. 927 -- 969 ) .
Sentence 2: In the first years of reign of Emperor Peter I ( reg . 927 - 969 ) , the demetrius headed the Bulgarian Patriarchate .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?