Q: In Photos how do I create a smart album of 4* and 5* star photos from my holiday?

I am trying to create smart albums of the best photos (4* and 5* rated) from events such as holidays.  From memory I think I did this in iPhoto by specifying "Event is France" AND "Star is greater than 3*".  Something like that. 

I have made extensive use of these types of albums and find them great as you can show different numbers of photos to people depending upon their level of interest.  I may want to look at all photos of 2* and above, whereas my friend may just want to see the 4* and 5* highlights.

Now I have migrated to Photos I can't seem to work out how to do this as star ratings are now individual keywords and you can't seem to mix AND and OR statements.  I would like to be able to create a smart album where: "Keyword is France" AND ("Keyword is 5 Star" OR "Keyword is 4 Star").

I thought I could get around this by creating a smart album of "Keyword is 4 star" AND "Keyword is 5 star" and call it "4* & 5* photos".  I could then say: "Keyword is France" AND "Album is 4* & 5* photos".  However I can't seem to reference another smart album in this way.

The only way I can think to do it is when I want to tag a photo as a 5* photo ... I need to give it Keywords for "1 Star", "2 Star", "3 Star", "4 Star", and "5 Star".  But that seems REALLY clunky.

Can anyone help?