This is the 10548th most frequent Turkish word.
bölgedekilerden
"Those from the region."
Here, "bölgedekilerden" is used to refer to some individuals out of a group of people located in a specific region.
Bölgedekilerden bazıları yardım teklif etti.
Some of the people in the region offered help.
Here, "bölgedekilerden" specifies one particular person from within a group of people located in the specified region.
Bölgedekilerden biri eski bir tanıdığımdı.
One of the people in the region was an old acquaintance of mine.
Here, "bölgedekilerden" is used to indicate a selection of individuals sharing the common location of the specified region.