so executions say they require you to have slain an enemy and be 5ft from ANOTHER enemy. 

is the idea that you kill an enemy, then stand next to another and just, gain your health back?

does this 2nd enemy die? or do they just need to be there?

is "another" a typo? is the idea that you kill an enemy, and then get within 5ft of the one you killed?
 any clarification would be great!