Sentence 1: This version of Hector Hammond is a xenobiology - professor , an old friend of Hal Jordan and the son of US senator Robert Hammond .
Sentence 2: This version of Robert Hammond is a xenobiologist - professor , an old friend of Hal Jordan and the son of Senator of the United States Hector Hammond .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?