Sorry for the multiple posts; Its was done by mistake
Following is the most updated question with an example:

I want to create an object that holds two lists; the lists are holding the same object type and they are being filtered according to type.
For example:
I have one class called Person which is connect to one table.
The members of the Person class are id,name and sex.
Now I want to create a new object (lets say Company) that holds two lists one for males and the other for females.
I don't want to define different classes for male and female; I want to be able to do it with the class Person only.

Attached is an exmple for classes I want to represet
class Person
{
Long id;
String name;
String sex;
}

Class Company
{
List males; //Each Item type is Person (where sex='Male')
List famles; //Each Item type is Person (Where sex='Female')
}

How can I definte it with hibrenate mapping?

Thanks in advance for your help