Comment 1 for bug 1270262

The above xpath could be improved, and made safe for the other subject types, by testing that the first (element-type) child of the mods32:subject node is of the type we care about for the definition in question. I leave that as an exercise for the reader, however, as I could not formulate the appropriate xpath expression before deciding that the above was good enough for a short-term fix. Assistance on that front would be greatly welcomed!