Add unit test

unit test updates with question rues

Lord, I hope not.  Are you using the highest rank parse to find these dependency relations?  This type still has problems, but there there should definitely be qVar in there, and I thought I'd gotten rid of the quantity relations . . . . oh, wait, those fixes are among the batch of commits that have been waiting to be merged for the last week. Sorry.   However, the comments in the scheme helpers should indicate that this question type is still dysfunctional anyway; I don't think we want to add question-types we know are dysfunctional to the unit test, do we?