If I got that call I'd consider triaging it as a stab wound rather than a traumatic injury, which would get it at least an amber. We are limited by the system and the information the caller gives, of course, but there are ways of guiding the system towards giving you the response you want. For instance, the question "Is there any *serious* bleeding?" usually gets a "no", but if you change your intonation and say "Is there any serious *bleeding*?" so long as there is some bleeding, you will usually get a "yes". This will bump the call priority up to at least an amber. Another favourite is the infamous "Is he breathing normally?" question. If the caller is unsure (they often are) you can rephrase the question to "Is this how he normally breathes?" or "Is he having any difficulty breathing?" I'm very careful not to push for a lower response (tempting though it is at times -- I hate it when I get someone with the flu coming out as a cat A) since you can get in all sorts of trouble, but if someone sounds like they are at death's door I think it's my duty to make sure they're not going to end up with a call from TAS.