In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

The archaeologists said that the bones were from a boy who was about 10 to 13 , and a young woman who was between 18 and 23 years old .
The archaeologists said the bones were from a boy who was roughly between the ages of ten and thirteen years at the time of his death and of a young woman who was roughly between the ages of eighteen and twenty-three years old .