First Lady Laura Bush at podium, in front of seated audience, at the White House Conference on Global Literacy.
Laura Bush is giving a talk about the importance of literacy to young people.
Just because If Barbara Bush gives a speech, it does not imply that the audience is made of young people.
Just because First Lady Laura Bush at podium, in front of seated audience, at the White House Conference on Global Literacy doesn't necessarily mean that she is giving a talk about the importance of literacy to young people.
Not all speeches are about young people.