Entity Framework Query for Complex Sql

Question

Anyone know how to represent this as an Entity Framework query? Either method syntax or query syntax is fine.

Declare @UserId int = 18

Select *
From [Profiles]
Where [Profiles].[ProfileId] 
IN( Select [SecurityProfileAssignments].[ProfileId]
    From [SecurityProfileUsers]
    Join [SecurityProfileAssignments] On [SecurityProfileAssignments].[SecurityProfileId] = [SecurityProfileUsers].[SecurityProfileId]
    Where [SecurityProfileUsers].[UserId] = @UserId)

Answer 1

Given a variable userId:

from p in Profiles
join spa in SeucrityProfileAssignments
    on p.ProfileId equals spa.ProfileId
join spu in SecurityProfileUsers
    on spa.SecurityProfileId equals spu.SecurityProfileId
where spu.UserId = userId
select new //optional object type
{
    //values to select
}