can't be found in SessionFactories error in NHibernate

[Dhyanga]

Hi, I am new to NHibernate and got issues when running the project. My project name is TestNHibernate, the namespace name is TestNHibernate and the assembly name is TestNHibernate as well. I have a class name Slide.cs as follows:

namespace TestNHibernate
{
public class Slide : IPersistentObject
{

    private Guid ID;
    private int QuestionID;
    private string Questions;

    public virtual int QuestionIDD
    {
        get { return QuestionID; }
        set { QuestionID = value; }
    }

    public virtual Guid GUID
    {
        get { return ID; }
        set { ID = value; }
    }

    public virtual string Questionss
    {
        get { return Questions; }
        set { Questions = value; }
    }
}

public class FacadeSlide : BaseFacade
{
    public FacadeSlide() { }
    public IList getAll()
    { 
      try
        {
            return GetQuery().OrderBy(s => s.QuestionIDD).ToList();
        }
        catch(Exception ex)
        {
            string s;
            s = ex.ToString();
            return null;
        }
    }
}

}

and my Slide.hbm.xml file is as follows:

The hibernate.cfg.xml file is as shown below:

NHibernate.Connection.DriverConnectionProvider
NHibernate.Driver.SqlClientDriver
Data Source=myServer;Initial Catalog=Practise;User ID=sa;Password=sa

NHibernate.Dialect.MsSql2005Dialect
thread
true