Sentence 1: She is also the adoptive-sister of screenwriter Christopher B. Landon and director Michael Landon , Jr. ; actor Mark Landon is her half brother .
Sentence 2: She is also the half-sister of scriptwriter Christopher B. Landon and director Michael Landon , Jr. , actor Mark Landon is her adoptive brother .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?