With no explanation, label each line with "person-athlete", "organization-sportsteam", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Chris
Petersen
coached
his
final
game
against
Boise
State
before
retiring
at
the
end
of
the
2019
season
.
Chris:person-athlete
Petersen:person-athlete
coached:O
his:O
final:O
game:O
against:O
Boise:organization-sportsteam
State:organization-sportsteam
before:O
retiring:O
at:O
the:O
end:O
of:O
the:O
2019:O
season:O
.:O