With no explanation, label each line with "O", "organization-company", "product-ship", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
A
number
of
other
significant
actions
followed
,
notably
the
thwarting
of
U-boat
attacks
on
the
White
Star
liner
,
``
Persic
``
which
sustained
damage
but
managed
to
reach
port
A:O
number:O
of:O
other:O
significant:O
actions:O
followed:O
,:O
notably:O
the:O
thwarting:O
of:O
U-boat:O
attacks:O
on:O
the:O
White:organization-company
Star:organization-company
liner:organization-company
,:O
``:O
Persic:product-ship
``:O
which:O
sustained:O
damage:O
but:O
managed:O
to:O
reach:O
port:O