With no explanation, label each line with "organization-other", "product-ship", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Royal
Navy
also
converted
some
East
Indiamen
into
fourth-rates
for
convoy
duty
,
such
as
HMS
``
Calcutta
''
.
The:organization-other
Royal:organization-other
Navy:organization-other
also:O
converted:O
some:O
East:product-ship
Indiamen:product-ship
into:O
fourth-rates:O
for:O
convoy:O
duty:O
,:O
such:O
as:O
HMS:product-ship
``:product-ship
Calcutta:product-ship
'':product-ship
.:O