With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
She
served
until
1943
,
when
she
was
torpedoed
and
sunk
by
off
Algeria
.
She:O
served:O
until:O
1943:O
,:O
when:O
she:O
was:O
torpedoed:O
and:O
sunk:O
by:O
off:O
Algeria:location-GPE
.:O