def get_fallback_for_verb verb
      fallbacks.each do |fallback|
        if verb.match fallback[:regex]
          ret = @data.at_xpath "/verbs/verbset[@id='#{fallback[:ref]}']"
          return ret
        end
      end
      
      false
    end
def get_fallback_for_verb verb
      fallbacks.each do |fallback|
        if verb.match fallback[:regex]
          ret = @data.at_xpath "/verbs/verbset[@id='#{fallback[:ref]}']"
          return ret
        end
      end
      
      false
    end
Find a fallback verbset whose regex matches the given verb.
 Used when an exact verb element cannot be matched with an input verb (that is, in most cases).