Regarding a EF linq query

see the below code

using (var context = new SchoolDBEntities())
{var stud1 = (from s in context.Students.Include("Standard")
                where s.StudentName == "Student1"
                select s).FirstOrDefault<Student>();
}

tell me why we need to specify studen inside firstordefault like FirstOrDefault<Student>() ?

if i write like this way then it will not work ?

using (var context = new SchoolDBEntities())
{
    var stud1 = (from s in context.Students.Include("Standard")
                where s.StudentName == "Student1"
                select s).FirstOrDefault();
}