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 ":".
Eleven
vessels
(
including
``
Charlotte
``
)
were
country
ships
.
Eleven:O
vessels:O
(:O
including:O
``:O
Charlotte:product-ship
``:O
):O
were:O
country:O
ships:O
.:O