Simplify the following text for a Grade 9 native English-speaking person.
Original: Jill Tracy Biden ( nÃ e Jacobs , previously Stevenson ) ( born June 5 , 1951 ) is an American educator and , as the wife of Vice President Joe Biden , is the Second Lady of the United States .
Simplified: Jill Tracy Jacobs Biden ( born 1951 ) is the current Second Lady of the United States ( wife of U.S. Vice President ) .