Recently someone commented to me that they found it difficult to keep Berta's siblings straight.  Which ones were married and not, and who was older and younger.  As a result, I tried to think about the order that they all go in.  I was surprised in that rather than reciting from memory the order of their ages, I had to think through a little logic puzzle to figure it all out.

In the interests of amusement, I present the puzzle here to answer the question, "Name Berta's siblings from oldest to youngest."

1. Berta's brothers are John, Michael, and Stephen.
2. Berta's sisters are Ellen, Emma, Mary Ann, and Therese.
3. The genders of Berta's siblings alternate through the whole list, with Berta being the only exception.  (That is to say, if you wrote B/G next to each name in the list, they would alternate as you went from name to name, except for the line Berta is on, which should say 'B'.)
4. One of the girls is the oldest.
5. Emma is older than Steve.
6. John is older than Berta.