With no explanation, label each line with "location-GPE", "O", "person-athlete", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
war
ended
in
November
1918
and
Irvin
arrived
back
in
Halifax
in
May
1919
.
The:O
war:O
ended:O
in:O
November:O
1918:O
and:O
Irvin:person-athlete
arrived:O
back:O
in:O
Halifax:location-GPE
in:O
May:O
1919:O
.:O