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
51st
was
mustered
out
on
June
16
,
1866
.
The:O
51st:O
was:O
mustered:O
out:O
on:O
June:O
16:O
,:O
1866:O
.:O