Raw SQL query and return the results from database multiple columns c# Windows Forms

I have a database and I need to pull data from it to WinForm. I can pull data from one column but I need from multiple columns. How to do this on Entity Framework. This is my code:

private void button2_Click(object sender, EventArgs e)
{
    using (var context = new spEntities()) 
    {
        var Da2 = context.Database.SqlQuery<string>("Select distinct kg from spower ").ToList<string>();
        listBox3.DataSource = Da2;

    }
}

And This is what I need:

private void button2_Click(object sender, EventArgs e)
{
    using (var context = new spEntities()) 
    {
        var Da2 = context.Database.SqlQuery<string>("Select distinct  kg,rep from spower ").ToList<string>();
        listBox3.DataSource = Da2;

    }
}

What would be easiest or the best way to get data from multiple columns.