USE    what the model really said      Does it have whiskers?  (yes = a cat)
USE    what it said the first time     Does it have whiskers?  (yes = a cat)
refuse after the prompt was improved   yes_is "whiskers" is neither animal
refuse no usable answer at all         there was no usable answer
refuse one field missing               question and yes_is must both be text
refuse a number where text belongs     question and yes_is must both be text
refuse not a question                  that is not a question
refuse empty                           too short to be a question
refuse a speech, not a question        too long to read out (80 characters)
refuse the wrong animal entirely       yes_is "a badger" is neither animal
refuse a question the tree has         the tree already asks that
refuse the same question, retyped      the tree already asks that
