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
bastion
contains
a
gunpowder
magazine
from
1690
.
The:O
bastion:O
contains:O
a:O
gunpowder:O
magazine:O
from:O
1690:O
.:O