distinct list in entity framework

Question

I search a lot but i can not find. I want to use "select distinct" in entity framework.

my tables are: scopes:scopeID,ScopeName sports:sportID,sportName Events:eventID,scopeID,sportID

public  List<Event> GetAllEvents(int sportID) 
{
   using (var mycontext= new MysiteEntities())
   {
      result= mycontext.Events   
                      .Where(l => l.SportID == sportID)
                      .OrderBy(l => l.ScopeID)
                      .ToList();
   }
   return result;
}

it return duplicate record by one scopeID.

events:

eventID scopeID sportID



  1        12      2
  2        12      2
  3        13      1
  4        13      2
  5        13      2

i want this result from:scopeID=12 and soprtID=2

 1        12      2
 3        13      2

how can do it?i want to return list from function.

thank you in advance.