With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Macy
's
East
was
then
merged
into
Macy
's
Inc
.
Macy:organization-company
's:organization-company
East:organization-company
was:O
then:O
merged:O
into:O
Macy:organization-company
's:organization-company
Inc:organization-company
.:O