Sentence 1: In his own autobiography `` Long Walk to Freedom '' , Nelson Mandela mentions James Gregory in two cases : the first one during his imprisonment in Pollsmoor :
Sentence 2: In his own autobiography , `` Long Walk to Freedom '' , James Gregory mentions Nelson Mandela in two occasions . The first was during his imprisonment in Pollsmoor :
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?