In 1923 , Louis Blaustein and his son , Jacob Blaustein , sold half a share of their American Oil Company to Pan American in return for a guaranteed oil supply .
In 1923 , Jacob Blaustein and his son , Louis Blaustein , sold half a share of their American Oil Company to Pan American in exchange for a guaranteed oil supply .

Select your answer from the options. Do these sentences mean the same thing?
Choose your answer from: a). no b). yes
a).