system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] How does the crew of Enterprise know who to beam up, with only the phrase "(number) to beam up"?
gpt
Transportees tend to cluster together, apart from non-transportees, when calling for extraction. 

If you hear "five" and see that the guy who called it is standing next to four other guys you can probably just intuit who wants back up.