asp.net-mvc-3 - NotSupportedExceptionエンティティまたは複合型は、LINQ to EntityクエリASP.Net MVC 3で構築できません

Question

このエラーに遭遇したのはこれが初めてです。誰かが私を助けることができますか？

        public IEnumerable<APPLICANT> GetApplicant()
    { 
        IEnumerable<APPLICANT> applicantdata = Cache.Get("applicants") as IEnumerable<APPLICANT>;

        IEnumerable<Profile> profiledata = Cache.Get("profiles") as IEnumerable<Profile>;

        if (applicantdata == null)
        {

            var list = (from f in context.APPLICANTs
                        select f.APPLICANT_ID).ToList();
            var applicantList = (from a in context.Profiles
                                 join app in context.APPLICANTs on a.PROFILE_ID equals app.Profile_id
                                 where list.Contains(app.APPLICANT_ID)
                                 select new APPLICANT());

            applicantdata = applicantList.Where(v => v.APPLICANT_LastName != null && v.APPLICANT_LastName != "" ).OrderBy(v => v.APPLICANT_ID).ToList();

            if (applicantdata.Any())
            {
                Cache.Set("applicants", applicantdata, 30);
            }
        }

そして、この行にエラーがあります

 applicantdata = applicantList.Where(v => v.APPLICANT_LastName != null && v.APPLICANT_LastName != "" ).OrderBy(v => v.APPLICANT_ID).ToList();

誰かが助けてくれたらありがとう