With no explanation, label each line with "location-GPE", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
William
W.
Webster
was
a
merchant
in
Sherbrooke
,
Quebec
,
Canada
,
before
emigrating
to
Clearwater
,
Minnesota
,
in
1857
.
William:person-other
W.:person-other
Webster:person-other
was:O
a:O
merchant:O
in:O
Sherbrooke:location-GPE
,:O
Quebec:location-GPE
,:O
Canada:location-GPE
,:O
before:O
emigrating:O
to:O
Clearwater:location-GPE
,:O
Minnesota:location-GPE
,:O
in:O
1857:O
.:O