We probably don't want to translate the location: the translators shouldn't know or care what they are, and we should be able to change them arbitrarily. I would recommend something like:

```
${_('You may use just the "urlname" if a problem, or "modulename/urlname" if not. (For example, if the location is {location1}, then just provide the {urlname1}. If the location is {location2}, then provide {urlname2}.)').format(
  location1="<tt>i4x://university/course/problem/problemname</tt>",
  urlname1="<tt>problemname</tt>",
  location2="<tt>i4x://university/course/notaproblem/someothername</tt>",
  urlname2="<tt>notaproblem/someothername</tt>")
}
```