With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
The
Ural
Cossack
Host
was
formed
from
the
Ural
Cossacks
,
who
had
settled
along
the
Ural
River
.
The:O
Ural:O
Cossack:O
Host:O
was:O
formed:O
from:O
the:O
Ural:O
Cossacks:O
,:O
who:O
had:O
settled:O
along:O
the:O
Ural:O
River:O
.:O