With no explanation, label each line with "location-GPE", "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
At
the
age
of
25
,
Barker
became
the
youngest
legislator
elected
in
Mississippi
's
history
.
At:O
the:O
age:O
of:O
25:O
,:O
Barker:person-politician
became:O
the:O
youngest:O
legislator:O
elected:O
in:O
Mississippi:location-GPE
's:O
history:O
.:O