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
14th-century
castle
was
rebuilt
in
the
15th
and
16th
centuries
.
The:O
14th-century:O
castle:O
was:O
rebuilt:O
in:O
the:O
15th:O
and:O
16th:O
centuries:O
.:O