Working except Qty always comes back as Other

I've trained the model and using it seems nearly perfect except that I never get a qty back:

eg. running it on the string `2 pound carrots, young ones if possible` returns:
```
{
  other: '2',
  unit: 'pound',
  name: 'carrots',
  comment: ', young ones if possible',
  input: '2 pound carrots, young ones if possible',
  ...
}
```