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
pace
of
construction
was
impressive
considering
size
and
complexity
.
The:O
pace:O
of:O
construction:O
was:O
impressive:O
considering:O
size:O
and:O
complexity:O
.:O