With no explanation, label each line with "location-GPE", "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
British
ships
–
five
destroyers
and
two
troop
ships
–
entered
the
Vestfjord
on
the
morning
of
4
March
,
and
launched
their
attack
.
The:O
British:location-GPE
ships:O
–:O
five:O
destroyers:O
and:O
two:O
troop:O
ships:O
–:O
entered:O
the:O
Vestfjord:location-bodiesofwater
on:O
the:O
morning:O
of:O
4:O
March:O
,:O
and:O
launched:O
their:O
attack:O
.:O