my nodes have 2 taxonomy terms. One 'region or city', and the other 'tags'.

I set the pattern to be 'directory/[term-raw]/[field_dir_storename-raw]'.

the problem is, sometimes the URL turns out to be:
directory/newyork/abc-store

and sometimes it turns out:
directory/clothingaccessories/abc-store

'term-raw' is explaned as "Unfiltered name of top taxonomy term. Warning: Token value contains raw user input."

What is 'top taxonomy term'? How do I make sure it turns out always to be directory/newyork/abc-store?

thanks
Gary