Depending on what you will be using it for you can still do binary checks on lists in that format. For example, if a file has this:
Animals:: “dogs”, “cats”
That file would be possible to list with:
List
WHERE contains(Animals, "cats")
The actual key value (Animals) would still have the full value of “dogs” and “cats” though, as the list query only works out if “cats” in there somewhere, anywhere. Not sure if this is useful information or not, but hey. 