Ananymous elements have same name in LINQ

This Exception came when  i try to query using LINQ to get the data in a variable as below :

var countryDetails = (from count in Supplier

                      where count.AddressInformation != null && count.AddressInformation.CountryInformation != null

                      select new

                      {

                          count.AddressInformation.CountryInformation.LongName,

                          count.AddressInformation.StateInformation.LongName

                      }).ToList();

To Resolve The Exception, We have to give Names to each variable in new object variable

i.e.,

var countryDetails = (from count in Supplier

                      where count.AddressInformation != null && count.AddressInformation.CountryInformation != null

                      select new

                      {

                          CountryName = count.AddressInformation.CountryInformation.LongName,

                          StateName = count.AddressInformation.StateInformation.LongName

                      }).ToList();