With no explanation, label each line with "O", "organization-sportsteam", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Walters
was
hired
after
the
entire
1977–78
Evansville
team
perished
in
a
plane
crash
during
the
season
in
December
1977
.
Walters:person-other
was:O
hired:O
after:O
the:O
entire:O
1977–78:O
Evansville:organization-sportsteam
team:O
perished:O
in:O
a:O
plane:O
crash:O
during:O
the:O
season:O
in:O
December:O
1977:O
.:O