How to use Predicate<String>?

Question

I was analyzing some .exe file to covert it into source code, I was not able to understand the lines which had <>9__0. What does it mean? Why we use Predicate<string>? Could anyone help or it is a junk code generate by .Net Reflector?

Console.WriteLine("Processing log file for failed case..." + str4);

while (true)
{
    Predicate<string> <>9__0;
    item = reader.ReadLine();
    if (item != null)
    {
        source.Add(item);
        continue;
    }
    Console.WriteLine(source.Count<string>());
    Predicate<string> match = <>9__0;
    if (<>9__0 == null)
    {
        Predicate<string> local1 = <>9__0;
        match = <>9__0 = x => x.ToLower().Contains(match3.ToLower());
    }
    List<string> list1 = new List<string>();
    foreach (string str8 in source.GetRange(source.FindIndex(match) - 10, 12))
    {
        builder.AppendLine(str8);
    }
    break;
}