With no explanation, label each line with "O", "product-ship", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
1997
HMY
``
Britannia
''
was
decommissioned
and
not
replaced
.
In:O
1997:O
HMY:product-ship
``:product-ship
Britannia:product-ship
'':product-ship
was:O
decommissioned:O
and:O
not:O
replaced:O
.:O