You don't have a problem with NULL fields, because CONCAT_WS will skip NULL values (together with separator). Regarding empty strings (which will not be skipped), you can just turn them into NULLs before doing this. If you cannot update the database itself, then make a query like.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.