Well, I used the names that appear in the Studio UI, not the XML tags. Figured that was audience-appropriate.
![temp](https://f.cloud.github.com/assets/6392274/2378698/f3eae5d0-a891-11e3-8ce5-44d7daba0966.png)
Is there a difference (that would have been surfaced to a course author) between the input type and the response type for these common problem types?
BUT! as far as "formularesponse", I did not see that one in @mikigoyal 's spec at https://edx-wiki.atlassian.net/wiki/display/AN/Answer+Distribution -- UNLESS that's #4 on the list of requirements and is currently identified as "Numerical Response". Please let me know if I should add "formularesponse" aka "Math Expression Input" to this set of included problem types.