With no explanation, label each line with "O", "location-bodiesofwater", "product-ship", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
the
early
hours
of
Sunday
28
February
1943
,
his
then
vessel
``
MGB
79
``
,
was
sunk
in
action
off
the
Hook
of
Holland
.
In:O
the:O
early:O
hours:O
of:O
Sunday:O
28:O
February:O
1943:O
,:O
his:O
then:O
vessel:O
``:O
MGB:product-ship
79:product-ship
``:O
,:O
was:O
sunk:O
in:O
action:O
off:O
the:O
Hook:location-bodiesofwater
of:location-bodiesofwater
Holland:location-bodiesofwater
.:O