With no explanation, label each line with "O", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
was
the
first
organization
in
the
United
States
to
support
the
idea
that
Macedonian
Slavs
constitute
a
separate
nationality
.
It:O
was:O
the:O
first:O
organization:O
in:O
the:O
United:organization-government/governmentagency
States:organization-government/governmentagency
to:O
support:O
the:O
idea:O
that:O
Macedonian:O
Slavs:O
constitute:O
a:O
separate:O
nationality:O
.:O