With no explanation, label each line with "location-GPE", "O", "product-weapon", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
boat
was
sunk
on
15
May
by
a
British
Handley
Page
Halifax
of
No
.
The:O
boat:O
was:O
sunk:O
on:O
15:O
May:O
by:O
a:O
British:location-GPE
Handley:product-weapon
Page:product-weapon
Halifax:product-weapon
of:O
No:O
.:O