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 ":".
A
sisterhood
and
hospital
were
formally
established
in
1874
.
A:O
sisterhood:O
and:O
hospital:O
were:O
formally:O
established:O
in:O
1874:O
.:O