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
value
of
any
given
piece
was
defined
by
the
number
of
wool
blankets
last
traded
for
them
.
The:O
value:O
of:O
any:O
given:O
piece:O
was:O
defined:O
by:O
the:O
number:O
of:O
wool:O
blankets:O
last:O
traded:O
for:O
them:O
.:O