With no explanation, label each line with "location-GPE", "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
A
large
group
of
students
then
organized
a
protest
march
from
the
campus
Victory
Bell
to
the
Porter
County
courthouse
.
A:O
large:O
group:O
of:O
students:O
then:O
organized:O
a:O
protest:O
march:O
from:O
the:O
campus:O
Victory:location-other
Bell:location-other
to:O
the:O
Porter:location-GPE
County:location-GPE
courthouse:O
.:O