With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Exhibits
include
coverage
of
slavery
in
US
history
and
its
abolition
.
Exhibits:O
include:O
coverage:O
of:O
slavery:O
in:O
US:location-GPE
history:O
and:O
its:O
abolition:O
.:O