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 ":".
United
States
troops
returned
in
the
spring
to
drive
the
British
from
Michigan
forever
.
United:location-GPE
States:location-GPE
troops:O
returned:O
in:O
the:O
spring:O
to:O
drive:O
the:O
British:location-GPE
from:O
Michigan:location-GPE
forever:O
.:O